#VU98865 Use-after-free in Linux kernel - CVE-2024-49876

Vulnerability identifier: #VU98865

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-2024-49876

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 get_submit_wq(), xe_guc_submit_init(), __release_guc_id() and __guc_exec_queue_fini_async() functions in drivers/gpu/drm/xe/xe_guc_submit.c, within the xe_device_destroy() and xe_device_create() functions in drivers/gpu/drm/xe/xe_device.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/272b0e78874586d6ccae04079d75b27b47705544
https://git.kernel.org/stable/c/421c74670b0f9d5c007f1276d3647aa58f407fde
https://git.kernel.org/stable/c/2d2be279f1ca9e7288282d4214f16eea8a727cdb

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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.