#VU65643 Double Free in Linux kernel - CVE-2022-34495

Vulnerability identifier: #VU65643

Vulnerability 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-2022-34495

CWE-ID: CWE-415

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to a boundary error within the rpmsg_probe() function in drivers/rpmsg/virtio_rpmsg_bus.c in Linux kernel. A local user can trigger a double free error in the virtio RPMSG bus driver and crash the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.18.4, 5.19, 5.18.4

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External links
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fecf31ee395b0295f2d7260aa29946b7605f7c85

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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.