#VU104426 Use-after-free in Linux kernel - CVE-2022-49412
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104426
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-2022-49412
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 bfq_setup_merge() function in block/bfq-iosched.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/5ee21edaed09e6b25f2c007b3f326752bc89bacf
- https://git.kernel.org/stable/c/7d172b9dc913e161d8ff88770eea01701ff553de
- https://git.kernel.org/stable/c/8abc8763b11c35e03cc91d59fd0cd28d39f88ca9
- https://git.kernel.org/stable/c/97be7d13fbd4001eeab49b1be6399f23a8c66160
- https://git.kernel.org/stable/c/a16c65cca7d2c7ff965fdd3adc8df2156529caf1
- https://git.kernel.org/stable/c/c1cee4ab36acef271be9101590756ed0c0c374d9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.121
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.46
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198