#VU104549 NULL pointer dereference in Linux kernel - CVE-2022-49273

Vulnerability identifier: #VU104549

Vulnerability 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-2022-49273

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 pl031_probe() function in drivers/rtc/rtc-pl031.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70
https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5
https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb
https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c

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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.