#VU79471 Use-after-free in Linux kernel - CVE-2023-35826


Vulnerability identifier: #VU79471

Vulnerability risk: Low

CVSSv4.0: [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-2023-35826

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

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

Vendor:

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 cedrus_remove() function in drivers/staging/media/sunxi/cedrus/cedrus.c. A local user can trigger a use-after-free error and execute arbitrary code on the system.


Mitigation
Install updates from vendor's website.

Vulnerable software versions


External links
http://lore.kernel.org/linux-arm-kernel/20230308032333.1893394-1-zyytlz.wz@163.com/T/
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50d0a7aea4809cef87979d4669911276aa23b71f
http://lore.kernel.org/all/a4dafa22-3ee3-dbe1-fd50-fee07883ce1a@xs4all.nl/
http://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
http://security.netapp.com/advisory/ntap-20230803-0002/


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.


Latest bulletins with this vulnerability