Use-after-free in Linux kernel btrfs

1) Use-after-free

EUVDB-ID: #VU90229

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-2024-26616

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

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 scrub_read_endio() and scrub_submit_initial_read() functions in fs/btrfs/scrub.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

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/642b9c520ef2f104277ad1f902f8526edbe087fb
https://git.kernel.org/stable/c/34de0f04684ec00c093a0455648be055f0e8e24f
https://git.kernel.org/stable/c/f546c4282673497a06ecb6190b50ae7f6c85b02f

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.