An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013297 advisory.

    An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in     rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013386 advisory.

    An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in     rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.

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

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in     rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.
    (CVE-2019-18680)

Note that Nessus relies on the presence of the package as reported by the vendor.

This update for the Linux Kernel 4.4.180-94_107 fixes several issues.

The following security issues were fixed :

CVE-2020-14331: Fixed a buffer over-write in vgacon_scroll (bsc#1174247).

CVE-2019-0155: Fixed a privilege escalation in the i915 graphics driver (bsc#1173663).

CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659).

CVE-2019-9458: Fixed a use-after-free in media/v4l (bsc#1173963).

CVE-2020-11668: Fixed a memory corruption issue in the Xirlink camera USB driver (bsc#1173942).

CVE-2019-19447: Fixed a use-after-free in ext4_put_super (bsc#1173869).

CVE-2019-18680: Fixed a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c (bsc#1173867).

CVE-2019-14901: Fixed a heap overflow in the Marvell WiFi driver (bsc#1173661).

CVE-2019-14895: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173100).

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

This update for the Linux Kernel 4.4.121-92_120 fixes several issues.

The following security issues were fixed :

CVE-2020-14331: Fixed a buffer over-write in vgacon_scroll (bsc#1174247).

CVE-2019-0155: Fixed a privilege escalation in the i915 graphics driver (bsc#1173663).

CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659).

CVE-2019-9458: Fixed a use-after-free in media/v4l (bsc#1173963).

CVE-2020-11668: Fixed a memory corruption issue in the Xirlink camera USB driver (bsc#1173942).

CVE-2019-19447: Fixed a use-after-free in ext4_put_super (bsc#1173869).

CVE-2019-18680: Fixed a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c (bsc#1173867).

CVE-2019-14816: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173666).

CVE-2019-14814: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173664).

CVE-2019-14815: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173665).

CVE-2019-14901: Fixed a heap overflow in the Marvell WiFi driver (bsc#1173661).

CVE-2019-14895: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173100).

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

The SUSE Linux Enterprise 12 SP 3 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-14895: A heap-based buffer overflow was discovered in the Linux kernel in Marvell WiFi chip driver. The flaw could occur when the station attempts a connection negotiation during the handling of the remote devices country settings. This could have allowed the remote device to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1157158).

CVE-2019-18660: The Linux kernel on powerpc allowed Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c (bnc#1157038).

CVE-2019-18683: An issue was discovered in drivers/media/platform/vivid in the Linux kernel. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded.
There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free (bnc#1155897).

CVE-2019-19062: A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures (bnc#1157333).

CVE-2019-19065: A memory leak in the sdma_init() function in drivers/infiniband/hw/hfi1/sdma.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering rhashtable_init() failures (bnc#1157191).

CVE-2019-19052: A memory leak in the gs_can_open() function in drivers/net/can/usb/gs_usb.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures (bnc#1157324).

CVE-2019-19074: A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) (bnc#1157143).

CVE-2019-19073: Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel allowed attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function (bnc#1157070).

CVE-2019-16231: drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 did not check the alloc_workqueue return value, leading to a NULL pointer dereference (bnc#1150466).

CVE-2019-18805: An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel There was a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact (bnc#1156187).

CVE-2019-18680: An issue was discovered in the Linux kernel. There was a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service (bnc#1155898).

CVE-2019-15213: An use-after-free was fixed caused by malicious USB device in drivers/media/usb/dvb-usb/dvb-usb-init.c (bsc#1146544).

CVE-2019-19536: An uninitialized Kernel memory can leak to USB devices in drivers/net/can/usb/peak_usb/pcan_usb_pro.c (bsc#1158394).

CVE-2019-19534: An uninitialized Kernel memory can leak to USB devices in drivers/net/can/usb/peak_usb/pcan_usb_core.c (bsc#1158398).

CVE-2019-19530: An use-after-free bug that can be caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver (bsc#1158410).

CVE-2019-19524: An use-after-free bug that can be caused by a malicious USB device in the drivers/input/ff-memless.c driver (bsc#1158413).

CVE-2019-19525: An use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver (bsc#1158417).

CVE-2019-19531: An use-after-free in yurex_delete may lead to denial of service (bsc#1158445).

CVE-2019-19523: An use-after-free on disconnect in USB adutux (bsc#1158823).

CVE-2019-19532: An out-of-bounds write bugs that can be caused by a malicious USB device in the Linux kernel HID drivers (bsc#1158824).

CVE-2019-19332: An out-of-bounds memory write via kvm_dev_ioctl_get_cpuid (bsc#1158827).

CVE-2019-19533: An info-leak bug that can be caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver (bsc#1158834).

CVE-2019-19527: An use-after-free bug that can be caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (bsc#1158900).

CVE-2019-19535: An info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver (bsc#1158903).

CVE-2019-19537: Two races in the USB character device registration and deregistration routines (bsc#1158904).

CVE-2019-19338: An incomplete fix for Transaction Asynchronous Abort (TAA) (bsc#1158954).

The update package also includes non-security fixes. See advisory for details.

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

The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional.

The Linux Kernel kvm hypervisor was adjusted to avoid page size changes in executable pages by splitting / merging huge pages into small pages as needed. More information can be found on https://www.suse.com/support/kb/doc/?id=7023735 CVE-2019-16995: Fix a memory leak in hsr_dev_finalize() if hsr_add_port failed to add a port, which may have caused denial of service (bsc#1152685).

CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack.

The Linux kernel was supplemented with the option to disable TSX operation altogether (requiring CPU Microcode updates on older systems) and better flushing of microarchitectural buffers (VERW).

The set of options available is described in our TID at https://www.suse.com/support/kb/doc/?id=7024251 CVE-2019-16233: drivers/scsi/qla2xxx/qla_os.c did not check the alloc_workqueue return value, leading to a NULL pointer dereference. (bsc#1150457).

CVE-2019-10220: Added sanity checks on the pathnames passed to the user space. (bsc#1144903).

CVE-2019-17666: rtlwifi: Fix potential overflow in P2P code (bsc#1154372).

CVE-2019-17133: cfg80211 wireless extension did not reject a long SSID IE, leading to a Buffer Overflow (bsc#1153158).

CVE-2019-16232: Fix a potential NULL pointer dereference in the Marwell libertas driver (bsc#1150465).

CVE-2019-16234: iwlwifi pcie driver did not check the alloc_workqueue return value, leading to a NULL pointer dereference. (bsc#1150452).

CVE-2019-17055: The AF_ISDN network module in the Linux kernel did not enforce CAP_NET_RAW, which meant that unprivileged users could create a raw socket (bnc#1152782).

CVE-2019-17056: The AF_NFC network module did not enforce CAP_NET_RAW, which meant that unprivileged users could create a raw socket (bsc#1152788).

CVE-2019-16413: The 9p filesystem did not protect i_size_write() properly, which caused an i_size_read() infinite loop and denial of service on SMP systems (bnc#1151347).

CVE-2019-15902: A backporting issue was discovered that re-introduced the Spectre vulnerability it had aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped (bnc#1149376).

CVE-2019-15291: Fixed a NULL pointer dereference issue that could be caused by a malicious USB device (bnc#1146519).

CVE-2019-15807: Fixed a memory leak in the SCSI module that could be abused to cause denial of service (bnc#1148938).

CVE-2019-13272: Fixed a mishandled the recording of the credentials of a process that wants to create a ptrace relationship, which allowed 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).
(bnc#1140671).

CVE-2019-14821: An out-of-bounds access issue was fixed in the kernel's kvm hypervisor. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system (bnc#1151350).

CVE-2019-15505: An out-of-bounds issue had been fixed that could be caused by crafted USB device traffic (bnc#1147122).

CVE-2017-18595: A double free in allocate_trace_buffer was fixed (bnc#1149555).

CVE-2019-14835: A buffer overflow flaw was found in the kernel's vhost functionality that translates virtqueue buffers to IOVs. A privileged guest user able to pass descriptors with invalid length to the host could use this flaw to increase their privileges on the host (bnc#1150112).

CVE-2019-15216: A NULL pointer dereference was fixed that could be malicious USB device (bnc#1146361).

CVE-2019-15924: A a NULL pointer dereference has been fixed in the drivers/net/ethernet/intel/fm10k module (bnc#1149612).

CVE-2019-9456: An out-of-bounds write in the USB monitor driver has been fixed. This issue could lead to local escalation of privilege with System execution privileges needed. (bnc#1150025).

CVE-2019-15926: An out-of-bounds access was fixed in the drivers/net/wireless/ath/ath6kl module. (bnc#1149527).

CVE-2019-15927: An out-of-bounds access was fixed in the sound/usb/mixer module (bnc#1149522).

CVE-2019-15666: There was an out-of-bounds array access in the net/xfrm module that could cause denial of service (bnc#1148394).

CVE-2019-15219: A NULL pointer dereference was fixed that could be abused by a malicious USB device (bnc#1146519 1146524).

CVE-2019-15220: A use-after-free issue was fixed that could be caused by a malicious USB device (bnc#1146519 1146526).

CVE-2019-15221: A NULL pointer dereference was fixed that could be caused by a malicious USB device (bnc#1146519 1146529).

CVE-2019-14814: A heap-based buffer overflow was fixed in the marvell wifi chip driver. That issue allowed local users to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1146512).

CVE-2019-14815: A missing length check while parsing WMM IEs was fixed (bsc#1146512, bsc#1146514, bsc#1146516).

CVE-2019-14816: A heap-based buffer overflow in the marvell wifi chip driver was fixed. Local users would have abused this issue to cause a denial of service (system crash) or possibly execute arbitrary code (bnc#1146516).

CVE-2017-18509: An issue in net/ipv6 as fixed. By setting a specific socket option, an attacker could control a pointer in kernel land and cause an inet_csk_listen_stop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue can be triggered as root (e.g., inside a default LXC container or with the CAP_NET_ADMIN capability) or after namespace unsharing. (bnc#1145477)

CVE-2019-9506: The Bluetooth BR/EDR specification used to permit sufficiently low encryption key length and did not prevent an attacker from influencing the key length negotiation. This allowed practical brute-force attacks (aka 'KNOB') that could decrypt traffic and inject arbitrary ciphertext without the victim noticing (bnc#1137865).

CVE-2019-15098: A NULL pointer dereference in drivers/net/wireless/ath was fixed (bnc#1146378).

CVE-2019-15290: A NULL pointer dereference in ath6kl_usb_alloc_urb_from_pipe was fixed (bsc#1146378).

CVE-2019-15212: A double-free issue was fixed in drivers/usb driver (bnc#1146391).

CVE-2016-10906: A use-after-free issue was fixed in drivers/net/ethernet/arc (bnc#1146584).

CVE-2019-15211: A use-after-free issue caused by a malicious USB device was fixed in the drivers/media/v4l2-core driver (bnc#1146519).

CVE-2019-15217: A a NULL pointer dereference issue caused by a malicious USB device was fixed in the drivers/media/usb/zr364xx driver (bnc#1146519).

CVE-2019-15214: An a use-after-free issue in the sound subsystem was fixed (bnc#1146519).

CVE-2019-15218: A NULL pointer dereference caused by a malicious USB device was fixed in the drivers/media/usb/siano driver (bnc#1146413).

CVE-2019-15215: A use-after-free issue caused by a malicious USB device was fixed in the drivers/media/usb/cpia2 driver (bnc#1146425).

CVE-2018-20976: A use-after-free issue was fixed in the fs/xfs driver (bnc#1146285).

CVE-2019-0154: An unprotected read access to i915 registers has been fixed that could have been abused to facilitate a local denial-of-service attack. (bsc#1135966)

CVE-2019-0155: A privilege escalation vulnerability has been fixed in the i915 module that allowed batch buffers from user mode to gain super user privileges. (bsc#1135967)

CVE-2019-16231: The fjes driver did not check the alloc_workqueue return value, leading to a NULL pointer dereference. (bnc#1150466)

CVE-2019-18805: Fix signed integer overflow in tcp_ack_update_rtt() that could have lead to a denial of service or possibly unspecified other impact (bsc#1156187)

CVE-2019-18680: A NULL pointer dereference in rds_tcp_kill_sock() could cause denial of service (bnc#1155898)

The update package also includes non-security fixes. See advisory for details.

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

ID	Name	Product	Family	Severity
308042	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013297)	Nessus	Unity Linux Local Security Checks	high
308036	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013386)	Nessus	Unity Linux Local Security Checks	high
246174	Linux Distros Unpatched Vulnerability : CVE-2019-18680	Nessus	Misc.	high
140381	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2497-1)	Nessus	SuSE Local Security Checks	critical
140379	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2491-1)	Nessus	SuSE Local Security Checks	critical
132390	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:3379-1)	Nessus	SuSE Local Security Checks	critical
131120	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:2984-1)	Nessus	SuSE Local Security Checks	critical

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CVE-2019-18680

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Tenable Plugins

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