NULL pointer dereference in Linux kernel rtla src



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-49423
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU104568

Risk: Low

CVSSv4.0: 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-2022-49423

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.18 - 5.18.2

CPE2.3 External links

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


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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