Vulnerability identifier: #VU92035

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26923

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 escalate privileges on the system.

The vulnerability exists due to improper locking within the unix_gc() function in net/unix/garbage.c due to garbage collector does not take into account the risk of embryo getting enqueued during the garbage collection. A local user can execute arbitrary code with elevated privileges.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/e76c2678228f6aec74b305ae30c9374cc2f28a51
http://git.kernel.org/stable/c/b75722be422c276b699200de90527d01c602ea7c
http://git.kernel.org/stable/c/507cc232ffe53a352847893f8177d276c3b532a9
http://git.kernel.org/stable/c/dbdf7bec5c920200077d693193f989cb1513f009
http://git.kernel.org/stable/c/47d8ac011fe1c9251070e1bd64cb10b48193ec51
http://git.kernel.org/stable/c/343c5372d5e17b306db5f8f3c895539b06e3177f
http://git.kernel.org/stable/c/2e2a03787f4f0abc0072350654ab0ef3324d9db3
http://git.kernel.org/stable/c/a36ae0ec2353015f0f6762e59f4c2dbc0c906423

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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.