Use-after-free in Linux kernel md driver

1) Use-after-free

EUVDB-ID: #VU104428

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-2022-49400

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 free_conf() function in drivers/md/raid0.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/0f2571ad7a30ff6b33cde142439f9378669f8b4f
https://git.kernel.org/stable/c/7da3454a65f8a56e65dfb44fa0ccac08cbc2f5a1
https://git.kernel.org/stable/c/b7a51df785031cc49caf1c59766ca89cfa97b54b
https://git.kernel.org/stable/c/f63fd1e0e0fc158023cc67ea6a07e278019061ba

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.