#VU79471 Use-after-free in Linux kernel - CVE-2023-35826
Published: August 14, 2023
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 access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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.
Remediation
Install updates from vendor's website.
External links
- https://lore.kernel.org/linux-arm-kernel/20230308032333.1893394-1-zyytlz.wz@163.com/T/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50d0a7aea4809cef87979d4669911276aa23b71f
- https://lore.kernel.org/all/a4dafa22-3ee3-dbe1-fd50-fee07883ce1a@xs4all.nl/
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://security.netapp.com/advisory/ntap-20230803-0002/