Vulnerability identifier: #VU90791

Vulnerability 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-2024-26726

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 clear_extent_uptodate() function in fs/btrfs/inode.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/02f2b95b00bf57d20320ee168b30fb7f3db8e555
http://git.kernel.org/stable/c/7bddf18f474f166c19f91b2baf67bf7c5eda03f7
http://git.kernel.org/stable/c/a4b7741c8302e28073bfc6dd1c2e73598e5e535e
http://git.kernel.org/stable/c/5571e41ec6e56e35f34ae9f5b3a335ef510e0ade

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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.