#VU104544 NULL pointer dereference in Linux kernel - CVE-2022-49254

Vulnerability identifier: #VU104544

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-2022-49254

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 cal_ctx_v4l2_init_formats() function in drivers/media/platform/ti-vpe/cal-video.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

---

External links
https://git.kernel.org/stable/c/1381f1a629a090c251965edb56f849ad648414a4
https://git.kernel.org/stable/c/91e2805579ab0783eed53acc2bf9fb553e939004
https://git.kernel.org/stable/c/aa613ac270292e102503e9767882e39200efe608
https://git.kernel.org/stable/c/abd77889851d2ead0d0c9c4d29f1808801477b00

---

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.