Use-after-free in Linux kernel - CVE-2022-48913
Published: August 22, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU96412
CSH Severity: Low
CVSS v4.0: 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-2022-48913
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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 local_irq_restore(), put_probe_ref(), __blk_trace_remove(), do_blk_trace_setup(), blk_trace_remove_queue() and blk_trace_setup_queue() functions in kernel/trace/blktrace.c. A local user can escalate privileges on the system.
How to mitigate CVE-2022-48913
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2
- https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58c
- https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.27
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17