Description
A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | Kernel | Kernel prior to 6.4-rc1 |
References
- http://www.openwall.com/lists/oss-security/2024/04/24/3
- https://security.netapp.com/advisory/ntap-20230703-0006/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2023/05/08/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/04/24/3
- https://security.netapp.com/advisory/ntap-20230703-0006/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2023/05/08/3Mailing List, Third Party Advisory
Timeline
- Published
- Jun 1, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified