#VU104630 NULL pointer dereference in Linux kernel - CVE-2022-49104

Vulnerability identifier: #VU104630

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-2022-49104

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 vchiq_msg_queue_push() and vchiq_msg_hold() functions in drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.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/04202f54dd8899e10f56a89c4c1ede0043fa22af
https://git.kernel.org/stable/c/3b424f6586a870b8d657c5e5419465bbe0e7b61f
https://git.kernel.org/stable/c/42f2142a337ee372455574809fc924580a7e51b2
https://git.kernel.org/stable/c/aa0b7296785312a4bfa8fac0ba8ad78698fd9fcf
https://git.kernel.org/stable/c/ca225857faf237234d2fffe5d1919467dfadd822

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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.