SB20250226386 - NULL pointer dereference in Linux kernel rtla src

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2022-49423)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 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

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the timerlat_top_main() and close() functions in tools/tracing/rtla/src/timerlat_top.c, within the timerlat_hist_main() and close() functions in tools/tracing/rtla/src/timerlat_hist.c, within the osnoise_top_main() function in tools/tracing/rtla/src/osnoise_top.c, within the osnoise_hist_main() function in tools/tracing/rtla/src/osnoise_hist.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2a6b52ed72c822b5ee146a6a00ea66614fe02653
• https://git.kernel.org/stable/c/b0f1c686baff74d5df10f2f46670ef4e24a75756
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3