Input validation error in Linux kernel md dm-vdo driver

1) Input validation error

EUVDB-ID: #VU99850

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-2024-50091

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the process_update_result(), process_query_result() and timeout_index_operations_callback() functions in drivers/md/dm-vdo/dedupe.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.11 - 6.11.3

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.11.3:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/63ef073084c67878d7a92e15ad055172da3f05a3
https://git.kernel.org/stable/c/0808ebf2f80b962e75741a41ced372a7116f1e26
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.4
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12

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.