Double free in Linux kernel remoteproc driver

1) Double free

EUVDB-ID: #VU104734

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-2022-49391

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 scp_remove() function in drivers/remoteproc/mtk_scp.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.18 - 5.19 rc6

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.18:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18.2:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/adc02700236613b344a947a897fc2741d52a43b9
https://git.kernel.org/stable/c/eac3e5b1c12f85732e60f5f8b985444d273866bb
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19

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.