Buffer overflow in Linux kernel - CVE-2022-50086

Vulnerability identifier: #VU111660

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-50086

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the wbt_init() function in block/blk-wbt.c, within the blk_iolatency_init() function in block/blk-iolatency.c, within the blk_iocost_init() function in block/blk-iocost.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo
kernel-livepatch-SLE15-SP5_Update_28-debugsource
kernel-livepatch-5_14_21-150500_55_113-default
kernel-default
kernel-default-debuginfo
kernel-default-debugsource
kernel-default-livepatch-devel
kernel-default-livepatch

Install update from vendor's repository.

Linux kernel - addressed in versions 5.15.61, 5.18.18, 5.19.2, 6.0
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_28-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_113-default - update to 1-150500.11.3.1
kernel-default - update to 5.14.21-150500.55.113.1
kernel-default-debuginfo - update to 5.14.21-150500.55.113.1
kernel-default-debugsource - update to 5.14.21-150500.55.113.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.113.1
kernel-default-livepatch - update to 5.14.21-150500.55.113.1

• https://git.kernel.org/stable/c/08ef66e800a85afc6b54cb95841f6502627eee2e
• https://git.kernel.org/stable/c/0b7f5d7a4d2a72ad9de04ab8ccba2a31904aa638
• https://git.kernel.org/stable/c/0c9bb1acd1d103a3070b2126870eb52761d606ce
• https://git.kernel.org/stable/c/14a6e2eb7df5c7897c15b109cba29ab0c4a791b6
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.61
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0

• Buffer overflow in Linux kernel block
• SUSE update for the Linux Kernel