Double free in Linux kernel trace

1) Double free

EUVDB-ID: #VU104735

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-2022-49410

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

The vulnerability exists due to a double free error within the init_var_ref() function in kernel/trace/trace_events_hist.c. A local user can perform a denial of service (DoS) attack.

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/058cb6d86b9789377216c936506b346aaa1eb581
https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50
https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e
https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f
https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae
https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2
https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a

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.