#VU90780 Improper locking in Linux kernel - CVE-2024-26899

Vulnerability identifier: #VU90780

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-2024-26899

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 DEFINE_MUTEX(), bd_link_disk_holder(), kfree() and bd_unlink_disk_holder() functions in block/holder.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/1e5c5b0abaee7b62a10b9707a62083b71ad21f62
https://git.kernel.org/stable/c/5a87c1f7993bc8ac358a3766bac5dc7126e01e98
https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75

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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.