The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2104 advisory.

  - An issue was discovered in drivers/i2c/i2c-core-smbus.c in the Linux kernel before 4.14.15. There is an     out of bounds write in the function i2c_smbus_xfer_emulated. (CVE-2017-18551)

  - An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function     allocate_trace_buffer in the file kernel/trace/trace.c. (CVE-2017-18595)

  - An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash). (CVE-2019-12614)

  - An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS     partially wedges when a chgrp fails on account of being out of disk quota. xfs_setattr_nonsize is failing     to unlock the ILOCK after the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS attack     vector, but it might result as well in remote DoS if the XFS filesystem is exported for instance via NFS.
    (CVE-2019-15538)

  - In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and     unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list     in fs/ext4/super.c. (CVE-2019-19447)

  - In the Linux kernel before 5.3.12, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9. (CVE-2019-19524)

  - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in     kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-     buffer). (CVE-2019-19768)

  - In the Android kernel in i2c driver there is a possible out of bounds write due to memory corruption. This     could lead to local escalation of privilege with System execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9454)

  - A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7.
    This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into     the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO     restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate     that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer     dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network     user to crash the system kernel, resulting in a denial of service. (CVE-2020-10711)

  - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to     a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it,     aka CID-2e90ca68b0d2. (CVE-2020-9383)

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

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-1489:04 advisory.

    * kernel: use after free in the video driver leads to local privilege escalation (CVE-2019-9458)
      * kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)
      * kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg (CVE-2019-15925)
      * kernel: memory leak in ccp_run_sha_cmd() (CVE-2019-18808)
      * kernel: Denial Of Service in the __ipmi_bmc_register() (CVE-2019-19046)
      * kernel: out-of-bounds write in ext4_xattr_set_entry (CVE-2019-19319)
      * Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)
      * kernel: use-after-free in ext4_put_super (CVE-2019-19447)
      * kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free     (CVE-2019-19524)
      * kernel: race condition caused by a malicious USB device in the USB character device driver layer     (CVE-2019-19537)
      * kernel: use-after-free in serial_ir_init_module() (CVE-2019-19543)
      * kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry (CVE-2019-19767)
      * kernel: use-after-free in debugfs_remove (CVE-2019-19770)
      * kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)
      * kernel: possible use-after-free due to a race condition in cdev_get (CVE-2020-0305)
      * kernel: out-of-bounds read in in vc_do_resize function (CVE-2020-8647)
      * kernel: use-after-free in n_tty_receive_buf_common function (CVE-2020-8648)
      * kernel: invalid read location in vgacon_invert_region function (CVE-2020-8649)
      * kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)
      * kernel: SELinux netlink permission check bypass (CVE-2020-10751)
      * kernel: out-of-bounds write in mpol_parse_str (CVE-2020-11565)
      * kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)
      * kernel: buffer overflow in mt76_add_fragment function (CVE-2020-12465)
      * kernel: xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write which could result in crash and     data coruption (CVE-2020-12659)
      * kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)
      * kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)
      * kernel: referencing inode of removed superblock in get_futex_key() causes UAF (CVE-2020-14381)
      * kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)
      * kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information     disclosure (CVE-2019-9455)
      * kernel: null pointer dereference in dlpar_parse_cc_property (CVE-2019-12614)
      * kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)
      * kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)
      * kernel: memory leak in af9005_identify_state() function (CVE-2019-18809)
      * kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function (CVE-2019-19056)
      * kernel: memory leak in the crypto_report() function (CVE-2019-19062)
      * kernel: Two memory leaks in the rtl_usb_probe() function (CVE-2019-19063)
      * kernel: A memory leak in the rtl8xxxu_submit_int_urb() function (CVE-2019-19068)
      * kernel: A memory leak in the predicate_parse() function (CVE-2019-19072)
      * kernel: information leak bug caused by a malicious USB device in the drivers/media/usb/ttusb-     dec/ttusb_dec.c (CVE-2019-19533)
      * kernel: Null pointer dereference in drop_sysctl_table() (CVE-2019-20054)
      * kernel: kernel stack information leak on s390/s390x (CVE-2020-10773)
      * kernel: possibility of memory disclosure when reading the file /proc/sys/kernel/rh_features     (CVE-2020-10774)
      * kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)
      * kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)     CVE-2019-12614     An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash).
    CVE-2019-15917     An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when     hci_uart_register_dev() fails in hci_uart_set_proto() in drivers/bluetooth/hci_ldisc.c.
    CVE-2019-15925     An issue was discovered in the Linux kernel before 5.2.3. An out of bounds access exists in the function     hclge_tm_schd_mode_vnet_base_cfg in the file drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c.
    CVE-2019-16231     drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value,     leading to a NULL pointer dereference.
    CVE-2019-16233     drivers/scsi/qla2xxx/qla_os.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value,     leading to a NULL pointer dereference.
    CVE-2019-18808     A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247.
    CVE-2019-18809     A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux     kernel through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka     CID-2289adbfa559.
    CVE-2019-19046
    ** DISPUTED ** A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c     in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by     triggering ida_simple_get() failure, aka CID-4aa7afb0ee20. NOTE: third parties dispute the relevance of     this because an attacker cannot realistically control this failure at probe time.
    CVE-2019-19056     A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in     drivers/net/wireless/marvell/mwifiex/pcie.c in the Linux kernel through 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering mwifiex_map_pci_memory() failures, aka CID-     db8fd2cde932.
    CVE-2019-19062     A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through     5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     crypto_report_alg() failures, aka CID-ffdde5932042.
    CVE-2019-19063     Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the     Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption), aka     CID-3f9361695113.
    CVE-2019-19068     A memory leak in the rtl8xxxu_submit_int_urb() function in     drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel through 5.3.11 allows attackers     to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka     CID-a2cdd07488e6.
    CVE-2019-19072     A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-96c5c6e6a5b6.
    CVE-2019-19319     In the Linux kernel 5.0.21, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-     out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a     large old_size value is used in a memset call.
    CVE-2019-19332     An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way     the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID     features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use     this flaw to crash the system, resulting in a denial of service.
    CVE-2019-19447     In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and     unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list     in fs/ext4/super.c.
    CVE-2019-19524     In the Linux kernel before 5.3.12, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9.
    CVE-2019-19533     In the Linux kernel before 5.3.4, there is an info-leak bug that can be caused by a malicious USB device     in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver, aka CID-a10feaf8c464.
    CVE-2019-19537     In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB     device in the USB character device driver layer, aka CID-303911cfc5b9. This affects     drivers/usb/core/file.c.
    CVE-2019-19543     In the Linux kernel before 5.1.6, there is a use-after-free in serial_ir_init_module() in     drivers/media/rc/serial_ir.c.
    CVE-2019-19767     The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors     in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka     CID-4ea99936a163.
    CVE-2019-19770
    ** DISPUTED ** In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove     function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously     created with a call to another debugfs function such as debugfs_create_file). NOTE: Linux kernel     developers dispute this issue as not being an issue with debugfs, instead this is an issue with misuse of     debugfs within blktrace.
    CVE-2019-20054     In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in     fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
    CVE-2019-20636     In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode     table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.
    CVE-2019-9455     In the Android kernel in the video driver there is a kernel pointer leak due to a WARN_ON statement. This     could lead to local information disclosure with System execution privileges needed. User interaction is     not needed for exploitation.
    CVE-2019-9458     In the Android kernel in the video driver there is a use after free due to a race condition. This could     lead to local escalation of privilege with no additional execution privileges needed. User interaction is     not needed for exploitation.
    CVE-2020-0305     In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to     local escalation of privilege with System execution privileges needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android-10Android ID: A-153467744     CVE-2020-10732     A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    CVE-2020-10751     A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it     incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly     only validate the first netlink message in the skb and allow or deny the rest of the messages within the     skb with the granted permission without further processing.
    CVE-2020-10773     A stack information leak flaw was found in s390/s390x in the Linux kernels memory manager functionality,     where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the     kernel data.
    CVE-2020-10774
    ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when     announcing a new security problem. When the candidate has been publicized, the details for this candidate     will be provided.
    CVE-2020-10942     In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family     field, which might allow attackers to trigger kernel stack corruption via crafted system calls.
    CVE-2020-11565
    ** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c     has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing,     aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability     because the issue is a bug in parsing mount options which can only be specified by a privileged user, so     triggering the bug does not grant any powers not already held..
    CVE-2020-11668     In the Linux kernel before 5.6.1, drivers/media/usb/gspca/xirlink_cit.c (aka the Xirlink camera USB     driver) mishandles invalid descriptors, aka CID-a246b4d54770.
    CVE-2020-12465     An array overflow was discovered in mt76_add_fragment in drivers/net/wireless/mediatek/mt76/dma.c in the     Linux kernel before 5.5.10, aka CID-b102f0c522cf. An oversized packet with too many rx fragments can     corrupt memory of adjacent pages.
    CVE-2020-12655     An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10.
    Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka     CID-d0c7feaf8767.
    CVE-2020-12659     An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-     of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.
    CVE-2020-12770     An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a     certain failure case, aka CID-83c6f2390040.
    CVE-2020-12826     A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2.
    Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a     do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in     a different security domain. Exploitation limitations include the amount of elapsed time before an integer     overflow occurs, and the lack of scenarios where signals to a parent process present a substantial     operational threat.
    CVE-2020-14381
    ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when     announcing a new security problem. When the candidate has been publicized, the details for this candidate     will be provided.
    CVE-2020-25641     A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length     biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a     denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block     device, resulting in a denial of service. The highest threat from this vulnerability is to system     availability.
    CVE-2020-8647     There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in     drivers/tty/vt/vt.c.
    CVE-2020-8648     There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common     function in drivers/tty/n_tty.c.
    CVE-2020-8649     There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region     function in drivers/video/console/vgacon.c.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

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

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

CVE-2018-13093, CVE-2018-13094

Wen Xu from SSLab at Gatech reported several NULL pointer dereference flaws that may be triggered when mounting and operating a crafted XFS volume. An attacker able to mount arbitrary XFS volumes could use this to cause a denial of service (crash).

CVE-2018-20976

It was discovered that the XFS file-system implementation did not correctly handle some mount failure conditions, which could lead to a use-after-free. The security impact of this is unclear.

CVE-2018-21008

It was discovered that the rsi wifi driver did not correctly handle some failure conditions, which could lead to a use-after- free. The security impact of this is unclear.

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-2019-2215

The syzkaller tool discovered a use-after-free vulnerability in the Android binder driver. A local user on a system with this driver enabled could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. However, this driver is not enabled on Debian packaged kernels.

CVE-2019-10220

Various developers and researchers found that if a crafted file- system or malicious file server presented a directory with filenames including a '/' character, this could confuse and possibly defeat security checks in applications that read the directory.

The kernel will now return an error when reading such a directory, rather than passing the invalid filenames on to user-space.

CVE-2019-14615

It was discovered that Intel 9th and 10th generation GPUs did not clear user-visible state during a context switch, which resulted in information leaks between GPU tasks. This has been mitigated in the i915 driver.

The affected chips (gen9 and gen10) are listed at <https://en.wikipedia.org/wiki/List_of_Intel_graphics_proces sing_units#Gen9>.

CVE-2019-14814, CVE-2019-14815, CVE-2019-14816

Multiple bugs were discovered in the mwifiex wifi driver, which could lead to heap buffer overflows. A local user permitted to configure a device handled by this driver could probably use this for privilege escalation.

CVE-2019-14895, CVE-2019-14901

ADLab of Venustech discovered potential heap buffer overflows in the mwifiex wifi driver. On systems using this driver, a malicious Wireless Access Point or adhoc/P2P peer could use these to cause a denial of service (memory corruption or crash) or possibly for remote code execution.

CVE-2019-14896, CVE-2019-14897

ADLab of Venustech discovered potential heap and stack buffer overflows in the libertas wifi driver. On systems using this driver, a malicious Wireless Access Point or adhoc/P2P peer could use these to cause a denial of service (memory corruption or crash) or possibly for remote code execution.

CVE-2019-15098

Hui Peng and Mathias Payer reported that the ath6kl wifi driver did not properly validate USB descriptors, which could lead to a NULL pointer derefernce. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15217

The syzkaller tool discovered that the zr364xx mdia driver did not correctly handle devices without a product name string, which 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-2019-15291

The syzkaller tool discovered that the b2c2-flexcop-usb media driver did not properly validate USB descriptors, which 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-2019-15505

The syzkaller tool discovered that the technisat-usb2 media driver did not properly validate incoming IR packets, which could lead to a heap buffer over-read. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops) or to read sensitive information from kernel memory.

CVE-2019-15917

The syzkaller tool found a race condition in code supporting UART-attached Bluetooth adapters, which could lead to a use- after-free. A local user with access to a pty device or other suitable tty device could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-16746

It was discovered that the wifi stack did not validate the content of beacon heads provided by user-space for use on a wifi interface in Access Point mode, which could lead to a heap buffer overflow. A local user permitted to configure a wifi interface could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-17052, CVE-2019-17053, CVE-2019-17054, CVE-2019-17055, CVE-2019-17056

Ori Nimron reported that various network protocol implementations

  - AX.25, IEEE 802.15.4, Appletalk, ISDN, and NFC - allowed     all users to create raw sockets. A local user could use     this to send arbitrary packets on networks using those     protocols.

CVE-2019-17075

It was found that the cxgb4 Infiniband driver requested DMA (Direct Memory Access) to a stack-allocated buffer, which is not supported and on some systems can result in memory corruption of the stack. A local user might be able to use this for denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-17133

Nicholas Waisman reported that the wifi stack did not valdiate received SSID information before copying it, which could lead to a buffer overflow if it is not validated by the driver or firmware. A malicious Wireless Access Point might be able to use this to cause a denial of service (memory corruption or crash) or for remote code execution.

CVE-2019-17666

Nicholas Waisman reported that the rtlwifi wifi drivers did not properly validate received P2P information, leading to a buffer overflow. A malicious P2P peer could use this to cause a denial of service (memory corruption or crash) or for remote code execution.

CVE-2019-18282

Jonathan Berger, Amit Klein, and Benny Pinkas discovered that the generation of UDP/IPv6 flow labels used a weak hash function, 'jhash'.
This could enable tracking individual computers as they communicate with different remote servers and from different networks. The 'siphash' function is now used instead.

CVE-2019-18683

Multiple race conditions were discovered in the vivid media driver, used for testing Video4Linux2 (V4L2) applications, These race conditions could result in a use-after-free. On a system where this driver is loaded, a user with permission to access media devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-18809

Navid Emamdoost discovered a potential memory leak in the af9005 media driver if the device fails to respond to a command. The security impact of this is unclear.

CVE-2019-19037

It was discovered that the ext4 filesystem driver did not correctly handle directories with holes (unallocated regions) in them. An attacker able to mount arbitrary ext4 volumes could use this to cause a denial of service (crash).

CVE-2019-19051

Navid Emamdoost discovered a potential memory leak in the i2400m wimax driver if the software rfkill operation fails. The security impact of this is unclear.

CVE-2019-19052

Navid Emamdoost discovered a potential memory leak in the gs_usb CAN driver if the open (interface-up) operation fails. The security impact of this is unclear.

CVE-2019-19056, CVE-2019-19057

Navid Emamdoost discovered potential memory leaks in the mwifiex wifi driver if the probe operation fails. The security impact of this is unclear.

CVE-2019-19062

Navid Emamdoost discovered a potential memory leak in the AF_ALG subsystem if the CRYPTO_MSG_GETALG operation fails. A local user could possibly use this to cause a denial of service (memory exhaustion).

CVE-2019-19066

Navid Emamdoost discovered a potential memory leak in the bfa SCSI driver if the get_fc_host_stats operation fails. The security impact of this is unclear.

CVE-2019-19068

Navid Emamdoost discovered a potential memory leak in the rtl8xxxu wifi driver, in case it fails to submit an interrupt buffer to the device. The security impact of this is unclear.

CVE-2019-19227

Dan Carpenter reported missing error checks in the Appletalk protocol implementation that could lead to a NULL pointer dereference. The security impact of this is unclear.

CVE-2019-19332

The syzkaller tool discovered a missing bounds check in the KVM implementation for x86, which could lead to a heap buffer overflow. A local user permitted to use KVM could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19447

It was discovered that the ext4 filesystem driver did not safely handle unlinking of an inode that, due to filesystem corruption, already has a link count of 0. An attacker able to mount arbitrary ext4 volumes could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19523

The syzkaller tool discovered a use-after-free bug in the adutux USB driver. 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-2019-19524

The syzkaller tool discovered a race condition in the ff-memless library used by input drivers. 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-2019-19525

The syzkaller tool discovered a use-after-free bug in the atusb driver for IEEE 802.15.4 networking. An attacker able to add and remove USB devices could possibly use this to cause a denial of service (memory corruption or crash) or for privilege escalation.

CVE-2019-19527

The syzkaller tool discovered that the hiddev driver did not correctly handle races between a task opening the device and disconnection of the underlying hardware. A local user permitted to access hiddev devices, and 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-2019-19530

The syzkaller tool discovered a potential use-after-free in the cdc-acm network driver. 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-2019-19531

The syzkaller tool discovered a use-after-free bug in the yurex USB driver. 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-2019-19532

The syzkaller tool discovered a potential heap buffer overflow in the hid-gaff input driver, which was also found to exist in many other input drivers. 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-2019-19533

The syzkaller tool discovered that the ttusb-dec media driver was missing initialisation of a structure, which could leak sensitive information from kernel memory.

CVE-2019-19534, CVE-2019-19535, CVE-2019-19536

The syzkaller tool discovered that the peak_usb CAN driver was missing initialisation of some structures, which could leak sensitive information from kernel memory.

CVE-2019-19537

The syzkaller tool discovered race conditions in the USB stack, involving character device registration. 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-2019-19767

The syzkaller tool discovered that crafted ext4 volumes could trigger a buffer overflow in the ext4 filesystem driver. An attacker able to mount such a volume could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.

CVE-2019-19947

It was discovered that the kvaser_usb CAN driver was missing initialisation of some structures, which could leak sensitive information from kernel memory.

CVE-2019-19965

Gao Chuan reported a race condition in the libsas library used by SCSI host drivers, which could lead to a NULL pointer dereference. An attacker able to add and remove SCSI devices could use this to cause a denial of service (BUG/oops).

CVE-2019-20096

The Hulk Robot tool discovered a potential memory leak in the DCCP protocol implementation. This may be exploitable by local users, or by remote attackers if the system uses DCCP, to cause a denial of service (out of memory).

For Debian 8 'Jessie', these problems have been fixed in version 4.9.210-1~deb8u1. This update additionally fixes Debian bugs #869511 and 945023; and includes many more bug fixes from stable updates 4.9.190-4.9.210 inclusive.

We recommend that you upgrade your linux-4.9 packages.

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.

ID	Name	Product	Family	Published	Updated	Severity
208643	CentOS 7 : kernel-alt (RHSA-2020:2104)	Nessus	CentOS Local Security Checks	10/9/2024	10/9/2024	high
294041	MiracleLinux 8 : kernel-4.18.0-240.el8 (AXSA:2021-1489:04)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	high
134240	Debian DLA-2114-1 : linux-4.9 security update	Nessus	Debian Local Security Checks	3/6/2020	3/25/2024	critical

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