#VU97253 Use-after-free in Linux kernel - CVE-2024-46683

Vulnerability identifier: #VU97253

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-2024-46683

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 xe_preempt_fence_arm() function in drivers/gpu/drm/xe/xe_preempt_fence.c, within the xe_exec_queue_create_ioctl() function in drivers/gpu/drm/xe/xe_exec_queue.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/10081b0b0ed201f53e24bd92deb2e0f3c3e713d4
https://git.kernel.org/stable/c/730b72480e29f63fd644f5fa57c9d46109428953

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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.