#VU100062 Use-after-free in Linux kernel - CVE-2024-50154

Vulnerability identifier: #VU100062

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-2024-50154

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 reqsk_queue_unlink() and reqsk_timer_handler() functions in net/ipv4/inet_connection_sock.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/8459d61fbf24967839a70235165673148c7c7f17
https://git.kernel.org/stable/c/5071beb59ee416e8ab456ac8647a4dabcda823b1
https://git.kernel.org/stable/c/997ae8da14f1639ce6fb66a063dab54031cd61b3
https://git.kernel.org/stable/c/51e34db64f4e43c7b055ccf881b7f3e0c31bb26d
https://git.kernel.org/stable/c/e8c526f2bdf1845bedaf6a478816a3d06fa78b8f

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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.