Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

This updated advisory text mentions the additional non-security changes and notes the need to install new binary packages.

CVE-2019-0136

It was discovered that the wifi soft-MAC implementation (mac80211) did not properly authenticate Tunneled Direct Link Setup (TDLS) messages.
A nearby attacker could use this for denial of service (loss of wifi connectivity).

CVE-2019-9506

Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered a weakness in the Bluetooth pairing protocols, dubbed the 'KNOB attack'. An attacker that is nearby during pairing could use this to weaken the encryption used between the paired devices, and then to eavesdrop on and/or spoof communication between them.

This update mitigates the attack by requiring a minimum encryption key length of 56 bits.

CVE-2019-11487

Jann Horn discovered that the FUSE (Filesystem-in-Userspace) facility could be used to cause integer overflow in page reference counts, leading to a use-after-free. On a system with sufficient physical memory, a local user permitted to create arbitrary FUSE mounts could use this for privilege escalation.

By default, unprivileged users can only mount FUSE filesystems through fusermount, which limits the number of mounts created and should completely mitigate the issue.

CVE-2019-15211

The syzkaller tool found a bug in the radio-raremono driver that could lead to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15212

The syzkaller tool found that the rio500 driver does not work correctly if more than one device is bound to it. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15215

The syzkaller tool found a bug in the cpia2_usb driver that leads to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15216

The syzkaller tool found a bug in the yurex driver that leads to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15218

The syzkaller tool found that the smsusb driver did not validate that USB devices have the expected endpoints, potentially leading to a NULL pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15219

The syzkaller tool found that a device initialisation error in the sisusbvga driver could lead to a NULL pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15220

The syzkaller tool found a race condition in the p54usb driver which could lead to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15221

The syzkaller tool found that the line6 driver did not validate USB devices' maximum packet sizes, which could lead to a heap buffer overrun. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15292

The Hulk Robot tool found missing error checks in the Appletalk protocol implementation, which could lead to a use-after-free. The security impact of this is unclear.

CVE-2019-15538

Benjamin Moody reported that operations on XFS hung after a chgrp command failed due to a disk quota. A local user on a system using XFS and disk quotas could use this for denial of service.

CVE-2019-15666

The Hulk Robot tool found an incorrect range check in the network transformation (xfrm) layer, leading to out-of-bounds memory accesses.
A local user with CAP_NET_ADMIN capability (in any user namespace) could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15807

Jian Luo reported that the Serial Attached SCSI library (libsas) did not correctly handle failure to discover devices beyond a SAS expander. This could lead to a resource leak and crash (BUG). The security impact of this is unclear.

CVE-2019-15924

The Hulk Robot tool found a missing error check in the fm10k Ethernet driver, which could lead to a NULL pointer dereference and crash (BUG/oops). The security impact of this is unclear.

CVE-2019-15926

It was found that the ath6kl wifi driver did not consistently validate traffic class numbers in received control packets, leading to out-of-bounds memory accesses. A nearby attacker on the same wifi network could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.189-3. This version also includes a fix for Debian bug #930904, and other fixes included in upstream stable updates.

We recommend that you upgrade your linux-4.9 and linux-latest-4.9 packages. You will need to use 'apt-get upgrade --with-new-pkgs' or 'apt upgrade' as the binary package names have changed.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0174 advisory.

  - Kernel: speculative bounds check bypass store (CVE-2018-3693)

  - kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559)

  - kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c     (CVE-2019-3846)

  - kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member,     which leads to a use-after-free in sockfs_setattr (CVE-2019-8912)

  - kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c     (CVE-2019-10126)

  - kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)

  - kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS     (CVE-2019-14814)

  - kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS     (CVE-2019-14815)

  - kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver (CVE-2019-14816)

  - kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c (CVE-2019-17133)

  - kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The openSUSE Leap 15.1 was updated to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2019-11477: A sequence of SACKs may have been     crafted by a remote attacker such that one can trigger     an integer overflow, leading to a kernel panic.
    (bsc#1137586).

  - CVE-2019-11478: It was possible to send a crafted     sequence of SACKs which would fragment the TCP     retransmission queue. A remote attacker may have been     able to further exploit the fragmented queue to cause an     expensive linked-list walk for subsequent SACKs received     for that same TCP connection. (bsc#1137586)

  - CVE-2019-11479: It was possible to send a crafted     sequence of SACKs which would fragment the RACK send     map. A remote attacker may be able to further exploit     the fragmented send map to cause an expensive     linked-list walk for subsequent SACKs received for that     same TCP connection. This would have resulted in excess     resource consumption due to low mss values.
    (bsc#1137586)

  - CVE-2019-12819: The function __mdiobus_register() in     drivers/net/phy/mdio_bus.c calls put_device(), which     will trigger a fixed_mdio_bus_init use-after-free. This     will cause a denial of service (bnc#1138291).

  - CVE-2019-12818: The nfc_llcp_build_tlv function in     net/nfc/llcp_commands.c may return NULL. If the caller     did not check for this, it will trigger a NULL pointer     dereference. This will cause denial of service. This     affects nfc_llcp_build_gb in net/nfc/llcp_core.c     (bnc#1138293).

  - CVE-2019-12456: An issue was discovered in the     MPT3COMMAND case in _ctl_ioctl_main in     drivers/scsi/mpt3sas/mpt3sas_ctl.c that allowed local     users to cause a denial of service or possibly have     unspecified other impact by changing the value of     ioc_number between two kernel reads of that value, aka a     'double fetch' vulnerability. (bnc#1136922)

  - CVE-2019-12380: An issue was discovered in the efi     subsystem in the Linux kernel     phys_efi_set_virtual_address_map in     arch/x86/platform/efi/efi.c and efi_call_phys_prolog in     arch/x86/platform/efi/efi_64.c mishandle memory     allocation failures (bnc#1136598).

  - CVE-2019-3846: A flaw that allowed an attacker to     corrupt memory and possibly escalate privileges was     found in the mwifiex kernel module while connecting to a     malicious wireless network (bnc#1136424).

  - CVE-2019-10124: An attacker could exploit an issue in     the hwpoison implementation to cause a denial of service     (BUG). (bsc#1130699)

  - CVE-2019-12382: In the drm_load_edid_firmware in     drivers/gpu/drm/drm_edid_load.c was an unchecked kstrdup     of fwstr, which might allow an attacker to cause a     denial of service (NULL pointer dereference and system     crash) (bnc#1136586).

  - CVE-2019-11487: The Linux kernel allowed page->_refcount     reference count overflow, with resultant use-after-free     issues, if about 140 GiB of RAM exists. This is related     to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h,     kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests (bnc#1133190).

The version of AOS installed on the remote host is prior to 5.16.1.3. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16.1.3 advisory.

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a     certain upper-bound check, leading to a buffer overflow. (CVE-2019-17666)

  - A flaw was found in the fix for CVE-2019-11135, in the Linux upstream kernel versions before 5.5 where,     the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort (TAA) error     occurs. When a guest is running on a host CPU affected by the TAA flaw (TAA_NO=0), but is not affected by     the MDS issue (MDS_NO=1), the guest was to clear the affected buffers by using a VERW instruction     mechanism. But when the MDS_NO=1 bit was exported to the guests, the guests did not use the VERW mechanism     to clear the affected buffers. This issue affects guests running on Cascade Lake CPUs and requires that     host has 'TSX' enabled. Confidentiality of data is the highest threat associated with this vulnerability.
    (CVE-2019-19338)

  - The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon     receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover     credentials by sniffing the network. (CVE-2018-18074)

  - urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin     redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the     Authorization header to be exposed to unintended hosts or transmitted in cleartext. (CVE-2018-20060)

  - In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the     request parameter. (CVE-2019-11236)

  - The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA     certificates is different from the OS store of CA certificates, which results in SSL connections     succeeding in situations where a verification failure is the correct outcome. This is related to use of     the ssl_context, ca_certs, or ca_certs_dir argument. (CVE-2019-11324)

  - The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with     excessive numbers of SETTINGS frames and also permitted clients to keep streams open without     reading/writing request/response data. By keeping streams open for requests that utilised the Servlet     API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread     exhaustion and a DoS. (CVE-2019-0199)

  - The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write     in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages     for the connection window (stream 0) clients were able to cause server-side threads to block eventually     leading to thread exhaustion and a DoS. (CVE-2019-10072)

  - When Apache Tomcat 9.0.0.M1 to 9.0.28, 8.5.0 to 8.5.47, 7.0.0 and 7.0.97 is configured with the JMX Remote     Lifecycle Listener, a local attacker without access to the Tomcat process or configuration files is able     to manipulate the RMI registry to perform a man-in-the-middle attack to capture user names and passwords     used to access the JMX interface. The attacker can then use these credentials to access the JMX interface     and gain complete control over the Tomcat instance. (CVE-2019-12418)

  - When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98     there was a narrow window where an attacker could perform a session fixation attack. The window was     considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has     been treated as a security vulnerability. (CVE-2019-17563)

  - The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99     introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were     incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a     reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a     reverse proxy is considered unlikely. (CVE-2019-17569)

  - A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to     9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of     such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
    (CVE-2020-11996)

  - An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56     did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such     requests were made, an OutOfMemoryException could occur leading to a denial of service. (CVE-2020-13934)

  - The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to     10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could     trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of     service. (CVE-2020-13935)

  - In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used     an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led     to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly     handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered     unlikely. (CVE-2020-1935)

  - When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to     Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP     connection. If such connections are available to an attacker, they can be exploited in ways that may be     surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped     with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected     (and recommended in the security guide) that this Connector would be disabled if not required. This     vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the     web application - processing any file in the web application as a JSP Further, if the web application     allowed file upload and stored those files within the web application (or the attacker was able to control     the content of the web application by some other means) then this, along with the ability to process a     file as a JSP, made remote code execution possible. It is important to note that mitigation is only     required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth     approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to     Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP     Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading     to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
    (CVE-2020-1938)

  - When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to     7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the     server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is     configured with sessionAttributeValueClassNameFilter=null (the default unless a SecurityManager is used)     or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker     knows the relative file path from the storage location used by FileStore to the file the attacker has     control over; then, using a specifically crafted request, the attacker will be able to trigger remote code     execution via deserialization of the file under their control. Note that all of conditions a) to d) must     be true for the attack to succeed. (CVE-2020-9484)

  - An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer     overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in     common/unistr.cpp. (CVE-2020-10531)

  - TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11135)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - The Linux kernel before 5.1-rc5 allows     page-i1/4z_refcount reference count overflow, with     resultant use-after-free issues, if about 140 GiB of     RAM exists. This is related to fs/fuse/dev.c,     fs/pipe.c, fs/splice.c, include/linux/mm.h,     include/linux/pipe_fs_i.h, kernel/trace/trace.c,     mm/gup.c, and mm/hugetlb.c. It can occur with FUSE     requests.(CVE-2019-11487)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0839 advisory.

  - kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)

  - kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain     upper-bound check, leading to a buffer overflow (CVE-2019-17666)

  - Kernel: KVM: export MSR_IA32_TSX_CTRL to guest - incomplete fix for TAA (CVE-2019-11135) (CVE-2019-19338)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in the Linux kernel before     4.18.7. In block/blk-core.c, there is an
    __blk_drain_queue() use-after-free because a certain     error case is mishandled.(CVE-2018-20856)

  - In the Linux kernel before 5.1.7, a device can be     tracked by an attacker using the IP ID values the     kernel produces for connection-less protocols (e.g.,     UDP and ICMP). When such traffic is sent to multiple     destination IP addresses, it is possible to obtain hash     collisions (of indices to the counter array) and     thereby obtain the hashing key (via enumeration). An     attack may be conducted by hosting a crafted web page     that uses WebRTC or gQUIC to force UDP traffic to     attacker-controlled IP addresses.(CVE-2019-10638)

  - The Linux kernel 4.x (starting from 4.1) and 5.x before     5.0.8 allows Information Exposure (partial kernel     address disclosure), leading to a KASLR bypass.
    Specifically, it is possible to extract the KASLR     kernel image offset using the IP ID values the kernel     produces for connection-less protocols (e.g., UDP and     ICMP). When such traffic is sent to multiple     destination IP addresses, it is possible to obtain hash     collisions (of indices to the counter array) and     thereby obtain the hashing key (via enumeration). This     key contains enough bits from a kernel address (of a     static variable) so when the key is extracted (via     enumeration), the offset of the kernel image is     exposed. This attack can be carried out remotely, by     the attacker forcing the target device to send UDP or     ICMP (or certain other) traffic to attacker-controlled     IP addresses. Forcing a server to send UDP traffic is     trivial if the server is a DNS server. ICMP traffic is     trivial if the server answers ICMP Echo requests     (ping). For client targets, if the target visits the     attacker's web page, then WebRTC or gQUIC can be used     to force UDP traffic to attacker-controlled IP     addresses.(CVE-2019-10639)

  - The Linux kernel was found vulnerable to an integer     overflow in the     drivers/video/fbdev/uvesafb.c:uvesafb_setcmap()     function. The vulnerability could result in local     attackers being able to crash the kernel or potentially     elevate privileges.(CVE-2018-13406)

  - The SCTP socket buffer used by a userspace application     is not accounted by the cgroups subsystem. An attacker     can use this flaw to cause a denial of service     attack.(CVE-2019-3874)

  - The Linux kernel before 5.1-rc5 allows     page-i1/4z_refcount reference count overflow, with     resultant use-after-free issues, if about 140 GiB of     RAM exists. This is related to fs/fuse/dev.c,     fs/pipe.c, fs/splice.c, include/linux/mm.h,     include/linux/pipe_fs_i.h, kernel/trace/trace.c,     mm/gup.c, and mm/hugetlb.c. It can occur with FUSE     requests.(CVE-2019-11487)

  - A flaw was found in the Linux kernel's implementation     of ext4 extent management. The kernel doesn't correctly     initialize memory regions in the extent tree block     which may be exported to a local user to obtain     sensitive information by reading empty/uninitialized     data from the filesystem.(CVE-2019-11833)

  - A flaw was found in the Linux kernel's implementation     of the Bluetooth Human Interface Device Protocol     (HIDP). A local attacker with access permissions to the     Bluetooth device can issue an IOCTL which will trigger     the do_hidp_sock_ioctl function in     net/bluetooth/hidp/sock.c.c. This function can leak     potentially sensitive information from the kernel stack     memory via a HIDPCONNADD command because a name field     may not be correctly NULL terminated.(CVE-2019-11884)

  - The Linux kernel is vulnerable to an out-of-bounds read     in ext4/balloc.c:ext4_valid_block_bitmap() function. An     attacker could trick a legitimate user or a privileged     attacker could exploit this by mounting a crafted ext4     image to cause a crash.(CVE-2018-1093)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4118-1 advisory.

  - The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an     integer overflow via a large relative timeout because ktime_add_safe is not used. (CVE-2018-13053)

  - An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer     dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted     xfs image. This occurs because of a lack of proper validation that cached inodes are free during     allocation. (CVE-2018-13093)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3. There is an out-of-bounds     read or a divide-by-zero error for an incorrect user_block_count in a corrupted f2fs image, leading to a     denial of service (BUG). (CVE-2018-13097)

  - An issue was discovered in fs/f2fs/inode.c in the Linux kernel through 4.17.3. A denial of service (slab     out-of-bounds read and BUG) can occur for a modified f2fs filesystem image in which FI_EXTRA_ATTR is set     in an inode. (CVE-2018-13098)

  - An issue was discovered in fs/f2fs/inline.c in the Linux kernel through 4.4. A denial of service (out-of-     bounds memory access and BUG) can occur for a modified f2fs filesystem image in which an inline inode     contains an invalid reserved blkaddr. (CVE-2018-13099)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3, which does not properly     validate secs_per_zone in a corrupted f2fs image, as demonstrated by a divide-by-zero error.
    (CVE-2018-13100)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is out-of-bounds access in     write_extent_buffer() when mounting and operating a crafted btrfs image, because of a lack of verification     that each block group has a corresponding chunk at mount time, within btrfs_read_block_groups in     fs/btrfs/extent-tree.c. (CVE-2018-14610)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a use-after-free in     try_merge_free_space() when mounting a crafted btrfs image, because of a lack of chunk type flag checks in     btrfs_check_chunk_valid in fs/btrfs/volumes.c. (CVE-2018-14611)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     btrfs_root_node() when mounting a crafted btrfs image, because of a lack of chunk block group mapping     validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c, and a lack of empty-tree checks in     check_leaf in fs/btrfs/tree-checker.c. (CVE-2018-14612)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in     io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item     validation in check_leaf_item in fs/btrfs/tree-checker.c. (CVE-2018-14613)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an out-of-bounds access in
    __remove_dirty_segment() in fs/f2fs/segment.c when mounting an f2fs image. (CVE-2018-14614)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a buffer overflow in     truncate_inline_inode() in fs/f2fs/inline.c when umounting an f2fs image, because a length value may be     negative. (CVE-2018-14615)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference in     fscrypt_do_page_crypto() in fs/crypto/crypto.c when operating on a file in a corrupted f2fs image.
    (CVE-2018-14616)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after     the final file truncation (removal). The new file created with the same inode may contain leftover pages     from cleancache and the old file data instead of the new one. (CVE-2018-16862)

  - The function hso_get_config_data in drivers/net/usb/hso.c in the Linux kernel through 4.19.8 reads if_num     from the USB device (as a u8) and uses it to index a small array, resulting in an object out-of-bounds     (OOB) read that potentially allows arbitrary read in the kernel address space. (CVE-2018-19985)

  - An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during     the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.
    (CVE-2018-20169)

  - An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in     drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by     leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.
    (CVE-2018-20511)

  - In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to     cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other     impact by inducing a high load. (CVE-2018-20784)

  - An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an
    __blk_drain_queue() use-after-free because a certain error case is mishandled. (CVE-2018-20856)

  - Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and     iOS versions before 11.4, and Android versions before the 2018-06-05 patch may not sufficiently validate     elliptic curve parameters used to generate public keys during a Diffie-Hellman key exchange, which may     allow a remote attacker to obtain the encryption key used by the device. (CVE-2018-5383)

  - Insufficient access control in the Intel(R) PROSet/Wireless WiFi Software driver before version 21.10 may     allow an unauthenticated user to potentially enable denial of service via adjacent access. (CVE-2019-0136)

  - A flaw was found in the Linux kernel. A heap based buffer overflow in mwifiex_uap_parse_tail_ies function     in drivers/net/wireless/marvell/mwifiex/ie.c might lead to memory corruption and possibly other     consequences. (CVE-2019-10126)

  - A flaw was found in the Linux kernel's Bluetooth implementation of UART, all versions kernel 3.x.x before     4.18.0 and kernel 5.x.x. An attacker with local access and write permissions to the Bluetooth hardware     could use this flaw to issue a specially crafted ioctl function call and cause the system to crash.
    (CVE-2019-10207)

  - In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel     produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple     destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and     thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page     that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses. (CVE-2019-10638)

  - The Linux kernel 4.x (starting from 4.1) and 5.x before 5.0.8 allows Information Exposure (partial kernel     address disclosure), leading to a KASLR bypass. Specifically, it is possible to extract the KASLR kernel     image offset using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and     ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash     collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). This     key contains enough bits from a kernel address (of a static variable) so when the key is extracted (via     enumeration), the offset of the kernel image is exposed. This attack can be carried out remotely, by the     attacker forcing the target device to send UDP or ICMP (or certain other) traffic to attacker-controlled     IP addresses. Forcing a server to send UDP traffic is trivial if the server is a DNS server. ICMP traffic     is trivial if the server answers ICMP Echo requests (ping). For client targets, if the target visits the     attacker's web page, then WebRTC or gQUIC can be used to force UDP traffic to attacker-controlled IP     addresses. NOTE: this attack against KASLR became viable in 4.1 because IP ID generation was changed to     have a dependency on an address associated with a network namespace. (CVE-2019-10639)

  - Insufficient input validation in Kernel Mode Driver in Intel(R) i915 Graphics for Linux before version 5.0     may allow an authenticated user to potentially enable escalation of privilege via local access.
    (CVE-2019-11085)

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to     prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive     information, cause a denial of service, or possibly have unspecified other impact by triggering a race     condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c,     fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c. (CVE-2019-11599)

  - An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when     megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
    This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)

  - An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a     race condition leading to a use-after-free, related to net namespace cleanup. (CVE-2019-11815)

  - fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the     extent tree block, which might allow local users to obtain sensitive information by reading uninitialized     data in the filesystem. (CVE-2019-11833)

  - The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel before 5.0.15 allows a     local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command,     because a name field may not end with a '\0' character. (CVE-2019-11884)

  - An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in     net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL     pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in     net/nfc/llcp_core.c. (CVE-2019-12818)

  - An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in     drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free.
    This will cause a denial of service. (CVE-2019-12819)

  - A NULL pointer dereference vulnerability in the function nfc_genl_deactivate_target() in net/nfc/netlink.c     in the Linux kernel before 5.1.13 can be triggered by a malicious user-mode program that omits certain NFC     attributes, leading to denial of service. (CVE-2019-12984)

  - In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an     LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds     violation. (CVE-2019-13233)

  - In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the     credentials of a process that wants to create a ptrace relationship, which allows local users to obtain     root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops     privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an     object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of     a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper     with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
    (CVE-2019-13272)

  - In parse_hid_report_descriptor in drivers/input/tablet/gtco.c in the Linux kernel through 5.2.1, a     malicious USB device can send an HID report that triggers an out-of-bounds write during generation of     debugging messages. (CVE-2019-13631)

  - In the Linux kernel before 5.2.3, set_geometry in drivers/block/floppy.c does not validate the sect and     head fields, as demonstrated by an integer overflow and out-of-bounds read. It can be triggered by an     unprivileged local user when a floppy disk has been inserted. NOTE: QEMU creates the floppy device by     default. (CVE-2019-14283)

  - In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params     division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry     with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should     be called. It can be triggered by an unprivileged local user even when a floppy disk has not been     inserted. NOTE: QEMU creates the floppy device by default. (CVE-2019-14284)

  - In the Linux kernel before 4.16.4, a double-locking error in drivers/usb/dwc3/gadget.c may potentially     cause a deadlock with f_hid. (CVE-2019-14763)

  - An issue was discovered in drivers/scsi/qedi/qedi_dbg.c in the Linux kernel before 5.1.12. In the     qedi_dbg_* family of functions, there is an out-of-bounds read. (CVE-2019-15090)

  - An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious     USB device in the drivers/media/v4l2-core/v4l2-dev.c driver because drivers/media/radio/radio-raremono.c     does not properly allocate memory. (CVE-2019-15211)

  - An issue was discovered in the Linux kernel before 5.1.8. There is a double-free caused by a malicious USB     device in the drivers/usb/misc/rio500.c driver. (CVE-2019-15212)

  - An issue was discovered in the Linux kernel before 5.0.10. There is a use-after-free in the sound     subsystem because card disconnection causes certain data structures to be deleted too early. This is     related to sound/core/init.c and sound/core/info.c. (CVE-2019-15214)

  - An issue was discovered in the Linux kernel before 5.2.6. There is a use-after-free caused by a malicious     USB device in the drivers/media/usb/cpia2/cpia2_usb.c driver. (CVE-2019-15215)

  - An issue was discovered in the Linux kernel before 5.0.14. There is a NULL pointer dereference caused by a     malicious USB device in the drivers/usb/misc/yurex.c driver. (CVE-2019-15216)

  - An issue was discovered in the Linux kernel before 5.1.8. There is a NULL pointer dereference caused by a     malicious USB device in the drivers/media/usb/siano/smsusb.c driver. (CVE-2019-15218)

  - An issue was discovered in the Linux kernel before 5.2.1. There is a use-after-free caused by a malicious     USB device in the drivers/net/wireless/intersil/p54/p54usb.c driver. (CVE-2019-15220)

  - An issue was discovered in the Linux kernel before 5.1.17. There is a NULL pointer dereference caused by a     malicious USB device in the sound/usb/line6/pcm.c driver. (CVE-2019-15221)

  - An issue was discovered in the Linux kernel before 5.0.9. There is a use-after-free in atalk_proc_exit,     related to net/appletalk/atalk_proc.c, net/appletalk/ddp.c, and net/appletalk/sysctl_net_atalk.c.
    (CVE-2019-15292)

  - In em28xx_unregister_dvb of em28xx-dvb.c, there is a possible use after free issue. This could lead to     local escalation of privilege with no additional execution privileges needed. User interaction is not     needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-111761954References:
    Upstream kernel (CVE-2019-2024)

  - In uvc_parse_standard_control of uvc_driver.c, there is a possible out-of-bound read due to improper input     validation. This could lead to local information disclosure with no additional execution privileges     needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel.
    Android ID: A-111760968. (CVE-2019-2101)

  - An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN     frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field.
    The privileged user root with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data     length code a higher value than the available CAN frame data size. In combination with a configured     checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel)     the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a     system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data     registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.
    (CVE-2019-3701)

  - A flaw was found in the Linux kernel in the function hid_debug_events_read() in drivers/hid/hid-debug.c     file which may enter an infinite loop with certain parameters passed from a userspace. A local privileged     user (root) can cause a system lock up and a denial of service. Versions from v4.18 and newer are     vulnerable. (CVE-2019-3819)

  - A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the     mwifiex kernel module while connecting to a malicious wireless network. (CVE-2019-3846)

  - An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including     v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster     than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the     vhost_net kernel thread, resulting in a DoS scenario. (CVE-2019-3900)

  - The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key     length and does not prevent an attacker from influencing the key length negotiation. This allows practical     brute-force attacks (aka KNOB) that can decrypt traffic and inject arbitrary ciphertext without the     victim noticing. (CVE-2019-9506)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
128779	Debian DLA-1919-2 : linux-4.9 security update	Nessus	Debian Local Security Checks	9/16/2019	4/26/2024	critical
133162	RHEL 7 : kernel-alt (RHSA-2020:0174)	Nessus	Red Hat Local Security Checks	1/22/2020	4/27/2024	critical
126033	openSUSE Security Update : the Linux Kernel (openSUSE-2019-1570) (SACK Panic) (SACK Slowness)	Nessus	SuSE Local Security Checks	6/19/2019	12/5/2022	high
126040	openSUSE Security Update : the Linux Kernel (openSUSE-2019-1579) (SACK Panic) (SACK Slowness)	Nessus	SuSE Local Security Checks	6/19/2019	12/5/2022	high
126059	openSUSE Security Update : the Linux Kernel (openSUSE-2019-1571) (SACK Panic) (SACK Slowness)	Nessus	SuSE Local Security Checks	6/20/2019	12/5/2022	high
164582	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.1.3)	Nessus	Misc.	9/1/2022	2/7/2024	critical
126298	EulerOS 2.0 SP5 : kernel (EulerOS-SA-2019-1671)	Nessus	Huawei Local Security Checks	6/27/2019	1/6/2021	high
134825	RHEL 7 : kernel-rt (RHSA-2020:0839)	Nessus	Red Hat Local Security Checks	3/23/2020	3/21/2024	high
129261	EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-2068)	Nessus	Huawei Local Security Checks	9/24/2019	4/23/2024	high
128478	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel (AWS) vulnerabilities (USN-4118-1)	Nessus	Ubuntu Local Security Checks	9/3/2019	1/9/2024	critical

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