Use-after-free in Linux kernel - CVE-2022-4696

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Main Vulnerability Database Vulnerabilities #VU71481

Use-after-free in Linux kernel - CVE-2022-4696

Published: January 24, 2023


Vulnerability identifier: #VU71481
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-4696
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in io_uring and the IORING_OP_SPLICE operation. A local user can trigger a use-after-free error and escalate privileges on the system.


Affected software

Linux kernel
Debian Linux
Anolis OS
Google Android
openEuler
Samsung Mobile Firmware
perf-debuginfo
kernel
kernel-tools
python3-perf
python3-perf-debuginfo
kernel-tools-devel
perf
bpftool-debuginfo
kernel-debuginfo
kernel-tools-debuginfo
kernel-debugsource
kernel-headers
kernel-source
bpftool
kernel-devel
kernel-debug-devel
kernel-debug-modules-extra
kernel-debug-modules
kernel-tools-libs
kernel-modules
kernel-modules-extra
kernel-modules-internal
kernel-debug-core
kernel-debug
kernel-core
kernel-tools-libs-devel
linux (Debian package)

How to mitigate CVE-2022-4696

Install updates from vendor's website.

Google Android - addressed in versions 11 2023-04-05, 12L 2023-04-05, 12 2023-04-05, 13 2023-04-05
Samsung Mobile Firmware - update to SMR-MAY-2023
perf-debuginfo - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-tools - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
python3-perf - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
python3-perf-debuginfo - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-tools-devel - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
perf - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
bpftool-debuginfo - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-debuginfo - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-tools-debuginfo - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-debugsource - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-headers - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-source - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
bpftool - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-devel - addressed in versions 5.10.0-60.79.0.103, 5.10.0-136.17.0.93
kernel-debug-devel - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-devel - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-debug-modules-extra - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-debug-modules - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-tools-libs - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-headers - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-modules - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-modules-extra - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-modules-internal - update to 5.10.134-13.1
kernel-tools - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-debug-core - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-debug - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-core - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel - addressed in versions 5.10.134-13.1, 5.10.134-14
bpftool - addressed in versions 5.10.134-13.1, 5.10.134-14
kernel-tools-libs-devel - addressed in versions 5.10.134-13.1, 5.10.134-14
perf - addressed in versions 5.10.134-13.1, 5.10.134-14
python3-perf - addressed in versions 5.10.134-13.1, 5.10.134-14
linux (Debian package) - update to 5.10.162-1

External References

Related Security Bulletins