Improper locking in Linux kernel - CVE-2022-49768

Vulnerability identifier: #VU108313

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-2022-49768

CWE-ID: CWE-667

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 improper locking within the p9_conn_cancel() function in net/9p/trans_fd.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
kgraft-patch-4_12_14-122_269-default
kernel-syms
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-devel-debuginfo
kernel-default-man
kernel-devel
kernel-source
kernel-macros
kernel-default
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-base-debuginfo
dlm-kmp-default
cluster-md-kmp-default
kernel-default-base
gfs2-kmp-default
kernel-default-devel
kernel-default-debuginfo
kernel-default-debugsource
ocfs2-kmp-default

Install update from vendor's website.

Linux kernel - update to 4.19.267
kgraft-patch-4_12_14-122_269-default - update to 1-8.3.1
kernel-syms - update to 4.12.14-122.269.1
kernel-default-kgraft-devel - update to 4.12.14-122.269.1
kernel-default-kgraft - update to 4.12.14-122.269.1
kernel-default-devel-debuginfo - update to 4.12.14-122.269.1
kernel-default-man - update to 4.12.14-122.269.1
kernel-devel - update to 4.12.14-122.269.1
kernel-source - update to 4.12.14-122.269.1
kernel-macros - update to 4.12.14-122.269.1
kernel-default - update to 4.12.14-122.269.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.269.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.269.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.269.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.269.1
kernel-default-base-debuginfo - update to 4.12.14-122.269.1
dlm-kmp-default - update to 4.12.14-122.269.1
cluster-md-kmp-default - update to 4.12.14-122.269.1
kernel-default-base - update to 4.12.14-122.269.1
gfs2-kmp-default - update to 4.12.14-122.269.1
kernel-default-devel - update to 4.12.14-122.269.1
kernel-default-debuginfo - update to 4.12.14-122.269.1
kernel-default-debugsource - update to 4.12.14-122.269.1
ocfs2-kmp-default - update to 4.12.14-122.269.1

• https://git.kernel.org/stable/c/52f1c45dde9136f964d63a77d19826c8a74e2c7f
• https://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c
• https://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f
• https://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f
• https://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd
• https://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1
• https://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556
• https://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.267

• Improper locking in Linux kernel 9p
• SUSE update for the Linux Kernel