Race condition in Linux kernel btrfs

1) Race condition

EUVDB-ID: #VU91468

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-35798

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the read_extent_buffer_pages() function in fs/btrfs/extent_io.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/0427c8ef8bbb7f304de42ef51d69c960e165e052
http://git.kernel.org/stable/c/3a25878a3378adce5d846300c9570f15aa7f7a80
http://git.kernel.org/stable/c/2885d54af2c2e1d910e20d5c8045bae40e02fbc1
http://git.kernel.org/stable/c/ef1e68236b9153c27cb7cf29ead0c532870d4215

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.