#VU98901 Use-after-free in Linux kernel - CVE-2024-47676

Vulnerability identifier: #VU98901

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-2024-47676

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 vmf_anon_prepare(), hugetlb_no_page() and hugetlb_vma_unlock_read() functions in mm/hugetlb.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/e897d184a8dd4a4e1f39c8c495598e4d9472776c
https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876
https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807

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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.