Vulnerability identifier: #VU96658

Vulnerability risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2024-44946

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: Yes

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 kcm_sendmsg(), KCM_STATS_ADD(), sk->sk_write_space() and init_kcm_sock() functions in net/kcm/kcmsock.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
http://git.kernel.org/stable/c/72da240aafb142630cf16adc803ccdacb3780849
http://git.kernel.org/stable/c/00425508f30baa5ab6449a1f478480ca7cffa6da
http://git.kernel.org/stable/c/9c8d544ed619f704e2b70e63e08ab75630c2ea23
http://git.kernel.org/stable/c/807067bf014d4a3ae2cc55bd3de16f22a01eb580

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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. However, proof of concept for this vulnerability is available.