#VU104880 Buffer overflow in Linux kernel - CVE-2022-49336

Vulnerability identifier: #VU104880

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-2022-49336

CWE-ID: CWE-119

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 memory corruption within the etnaviv_iommu_unmap_gem() function in drivers/gpu/drm/etnaviv/etnaviv_mmu.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/03bd455a79f69d97fee3e3b212ab754442f10e5c
https://git.kernel.org/stable/c/19323b3671a85788569d15685c8f83a05ec48cbb
https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40
https://git.kernel.org/stable/c/461c0fdf9434188875da9f10cfc86065866bb797
https://git.kernel.org/stable/c/64f4edec081cb7c97c5e928529d0e1b0dbbffb83
https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b

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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.