#VU96104 Use-after-free in Linux kernel - CVE-2024-43853

Vulnerability identifier: #VU96104

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-2024-43853

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 proc_cpuset_show() function in kernel/cgroup/cpuset.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/29a8d4e02fd4840028c38ceb1536cc8f82a257d4
https://git.kernel.org/stable/c/96226fbed566f3f686f53a489a29846f2d538080
https://git.kernel.org/stable/c/29ac1d238b3bf126af36037df80d7ecc4822341e
https://git.kernel.org/stable/c/1be59c97c83ccd67a519d8a49486b3a8a73ca28a

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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.