Out-of-bounds read in Linux kernel - CVE-2022-49234

Vulnerability identifier: #VU104529

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-2022-49234

CWE-ID: CWE-125

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 an out-of-bounds read error within the dsa_switch_bridge_leave() function in net/dsa/switch.c. A local user can perform a denial of service (DoS) attack.

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

Install update from vendor's website.

Linux kernel - update to 5.17.2
python3-perf-debuginfo - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
python3-perf - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
perf-debuginfo - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
perf - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-tools-devel - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-tools-debuginfo - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-tools - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-source - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-headers - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-devel - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-debugsource - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel-debuginfo - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
kernel - addressed in versions 5.10.0-284.0.0.186, 5.10.0-284.0.0.187
bpftool-debuginfo - update to 5.10.0-284.0.0.187
bpftool - update to 5.10.0-284.0.0.187

• https://git.kernel.org/stable/c/108dc8741c203e9d6ce4e973367f1bac20c7192b
• https://git.kernel.org/stable/c/e1f2a4dd8d433eec393d09273a78a3d3551339cf
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2

• Out-of-bounds read in Linux kernel dsa
• openEuler 22.03 LTS SP4 update for kernel
• openEuler 22.03 LTS SP3 update for kernel