#VU104415 Use-after-free in Linux kernel - CVE-2022-49489

Vulnerability identifier: #VU104415

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49489

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the _dpu_kms_hw_destroy() function in drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c. A local user can escalate privileges on the system.

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/134760263f6441741db0b2970e7face6b34b6d1c
https://git.kernel.org/stable/c/5b0adf5cbf3b74721e4e4c4e0cadc91b8df8bcc2
https://git.kernel.org/stable/c/97ac682b6f7d36be5d934f86c9911066540a68f1
https://git.kernel.org/stable/c/aa4cb188988dc6f1b3f4917d4dbc452150a5d871
https://git.kernel.org/stable/c/ef10d0c68e8608848cd58fca2589685718426607
https://git.kernel.org/stable/c/ef4bdaac7cb5416f236613ed9337ff0ea8ee329b
https://git.kernel.org/stable/c/fa5186b279ecf44b14fb435540d2065be91cb1ed

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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.