#VU97268 Improper locking in Linux kernel - CVE-2024-46695

Vulnerability identifier: #VU97268

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-46695

CWE-ID: CWE-667

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the smack_inode_notifysecctx() function in security/smack/smack_lsm.c, within the selinux_inode_notifysecctx() function in security/selinux/hooks.c. A local user can perform a denial of service (DoS) attack.

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/459584258d47ec3cc6245a82e8a49c9d08eb8b57
https://git.kernel.org/stable/c/f71ec019257ba4f7ab198bd948c5902a207bad96
https://git.kernel.org/stable/c/76a0e79bc84f466999fa501fce5bf7a07641b8a7

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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.