#VU92213 Use-after-free in Linux kernel - CVE-2024-26947

Vulnerability identifier: #VU92213

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-2024-26947

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 __sync_icache_dcache() function in arch/arm/mm/flush.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/0c027c2bad7f5111c51a358b5d392e1a695dabff
https://git.kernel.org/stable/c/9f7ddc222cae8254e93d5c169a8ae11a49d912a7
https://git.kernel.org/stable/c/fb3a122a978626b33de3367ee1762da934c0f512
https://git.kernel.org/stable/c/0c66c6f4e21cb22220cbd8821c5c73fc157d20dc

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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.