Improper locking in Linux kernel - CVE-2022-49814

Vulnerability identifier: #VU108307

CSH Severity: Low

CVSS v4 BT: 4.3 [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/E:U/U:Clear]

CVE-ID: CVE-2022-49814

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 requeue_rx_msgs(), kcm_wait_data(), KCM_STATS_INCR() and kcm_splice_read() functions in net/kcm/kcmsock.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo

Install update from vendor's website.

Linux kernel - update to 5.15.80
kernel - update to 4.19.90-2507.1.0.0334
bpftool - update to 4.19.90-2507.1.0.0334
bpftool-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-debugsource - update to 4.19.90-2507.1.0.0334
kernel-devel - update to 4.19.90-2507.1.0.0334
kernel-source - update to 4.19.90-2507.1.0.0334
kernel-tools - update to 4.19.90-2507.1.0.0334
kernel-tools-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-tools-devel - update to 4.19.90-2507.1.0.0334
perf - update to 4.19.90-2507.1.0.0334
perf-debuginfo - update to 4.19.90-2507.1.0.0334
python2-perf - update to 4.19.90-2507.1.0.0334
python2-perf-debuginfo - update to 4.19.90-2507.1.0.0334
python3-perf - update to 4.19.90-2507.1.0.0334
python3-perf-debuginfo - update to 4.19.90-2507.1.0.0334

• https://git.kernel.org/stable/c/22f6b5d47396b4287662668ee3f5c1f766cb4259
• https://git.kernel.org/stable/c/4154b6afa2bd639214ff259d912faad984f7413a
• https://git.kernel.org/stable/c/5121197ecc5db58c07da95eb1ff82b98b121a221
• https://git.kernel.org/stable/c/bf92e54597d842da127c59833b365d6faeeaf020
• https://git.kernel.org/stable/c/ce57d6474ae999a3b2d442314087473a646a65c7
• https://git.kernel.org/stable/c/d9ad4de92e184b19bcae4da10dac0275abf83931
• https://git.kernel.org/stable/c/f7b0e95071bb4be4b811af3f0bfc3e200eedeaa3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80

• Improper locking in Linux kernel kcm
• openEuler 20.03 LTS SP4 update for kernel