Improper locking in Linux kernel - CVE-2022-50676

Vulnerability identifier: #VU119748

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-2022-50676

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 rds_tcp_reset_callbacks() function in net/rds/tcp.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_293-default
cluster-md-kmp-default
kernel-default-devel-debuginfo
kernel-default-man
kernel-macros
kernel-devel
kernel-source
gfs2-kmp-default-debuginfo
kernel-syms
kernel-default-devel
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-base
kernel-default
dlm-kmp-default
dlm-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-kgraft
kernel-default-debuginfo
kernel-default-debugsource
kernel-default-kgraft-devel

Install update from vendor's repository.

Linux kernel - update to 4.19.262
kgraft-patch-4_12_14-122_293-default - update to 1-8.3.1
cluster-md-kmp-default - update to 4.12.14-122.293.1
kernel-default-devel-debuginfo - update to 4.12.14-122.293.1
kernel-default-man - update to 4.12.14-122.293.1
kernel-macros - update to 4.12.14-122.293.1
kernel-devel - update to 4.12.14-122.293.1
kernel-source - update to 4.12.14-122.293.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-syms - update to 4.12.14-122.293.1
kernel-default-devel - update to 4.12.14-122.293.1
ocfs2-kmp-default - update to 4.12.14-122.293.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-base - update to 4.12.14-122.293.1
kernel-default - update to 4.12.14-122.293.1
dlm-kmp-default - update to 4.12.14-122.293.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.293.1
gfs2-kmp-default - update to 4.12.14-122.293.1
kernel-default-base-debuginfo - update to 4.12.14-122.293.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-kgraft - update to 4.12.14-122.293.1
kernel-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-debugsource - update to 4.12.14-122.293.1
kernel-default-kgraft-devel - update to 4.12.14-122.293.1

• https://git.kernel.org/stable/c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1
• https://git.kernel.org/stable/c/30bfa5aa7228eb1e67663d67e553627e572cc717
• https://git.kernel.org/stable/c/360aa7219285fac63dab99706a16f2daf3222abe
• https://git.kernel.org/stable/c/5d2ba255e93211e541373469dffbda7c99dfa0e5
• https://git.kernel.org/stable/c/a91b750fd6629354460282bbf5146c01b05c4859
• https://git.kernel.org/stable/c/afe7053c390fe8ff27d0c2ceaece5625283044ba
• https://git.kernel.org/stable/c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b
• https://git.kernel.org/stable/c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c
• https://git.kernel.org/stable/c/e3cb25d3ad08f5dbd53ce2b31720cad529944322
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.262

• Improper locking in Linux kernel rds
• SUSE update for the Linux Kernel