Use after free in Linux kernel - CVE-2022-1043
Published: August 29, 2022 / Updated: June 20, 2024
Vulnerability identifier: #VU92742
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:A/U:Clear
CVE-ID: CVE-2022-1043
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
A flaw was found in the Linux kernel's io_uring implementation. This flaw allows an attacker with a local account to corrupt system memory, crash the system or escalate privileges.
How to mitigate CVE-2022-1043
Install update from vendor's repository.
Sources
- https://github.com/torvalds/linux/commit/a30f895ad3239f45012e860d4f94c1a388b36d14
- https://bugzilla.redhat.com/show_bug.cgi?id=1997328
- https://www.zerodayinitiative.com/advisories/ZDI-22-362/
- https://access.redhat.com/security/cve/CVE-2022-1043
- http://packetstormsecurity.com/files/170834/io_uring-Same-Type-Object-Reuse-Privilege-Escalation.html