#VU102396 Use-after-free in Linux kernel - CVE-2024-56765

Vulnerability identifier: #VU102396

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-2024-56765

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 vas_mmap_fault() function in arch/powerpc/platforms/book3s/vas-api.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/05aa156e156ef3168e7ab8a68721945196495c17
https://git.kernel.org/stable/c/6d9cd27105459f169993a4c5f216499a946dbf34
https://git.kernel.org/stable/c/8b2282b5084521254a2cd9742a3f4e1d5b77f843
https://git.kernel.org/stable/c/b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9

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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.