Improper locking in Linux kernel mptcp

1) Improper locking

EUVDB-ID: #VU90785

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26781

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the subflow_get_info() function in net/mptcp/diag.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

CPE2.3

External links

http://git.kernel.org/stable/c/70e5b013538d5e4cb421afed431a5fcd2a5d49ee
http://git.kernel.org/stable/c/cc32ba2fdf3f8b136619fff551f166ba51ec856d
http://git.kernel.org/stable/c/f27d319df055629480b84b9288a502337b6f2a2e
http://git.kernel.org/stable/c/fa8c776f4c323a9fbc8ddf25edcb962083391430
http://git.kernel.org/stable/c/d487e7ba1bc7444d5f062c4930ef8436c47c7e63
http://git.kernel.org/stable/c/d6a9608af9a75d13243d217f6ce1e30e57d56ffe

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.