CVE-2022-1043

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-08-29 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

Linux kernel: from 5.10.51 before 5.10.61; from 5.11 before 5.13.13 — fixed in 5.10.61, 5.13.13

How to fix

Upgrade to a fixed version: Linux kernel 5.10.61, 5.13.13. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/170834/io_uring-Same-Type-Object-Reuse-Privilege-Escalation.html
https://access.redhat.com/security/cve/CVE-2022-1043
https://bugzilla.redhat.com/show_bug.cgi?id=1997328
https://github.com/torvalds/linux/commit/a30f895ad3239f45012e860d4f94c1a388b36d14
https://www.zerodayinitiative.com/advisories/ZDI-22-362/
http://packetstormsecurity.com/files/170834/io_uring-Same-Type-Object-Reuse-Privilege-Escalation.html
https://access.redhat.com/security/cve/CVE-2022-1043
https://bugzilla.redhat.com/show_bug.cgi?id=1997328
https://github.com/torvalds/linux/commit/a30f895ad3239f45012e860d4f94c1a388b36d14
https://www.zerodayinitiative.com/advisories/ZDI-22-362/

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