Description
An out-of-bounds memory access flaw was found in the io_uring SQ/CQ rings functionality in the Linux kernel. This issue could allow a local user to crash the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | — | 6.7-rc5 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Fedora | Fedora | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.6.8-1 | — |
| Debian 13 | linux | 6.6.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-aws-6.5 +1 | 6.5.0-1015.15~22.04.1 | USN-6680-3, USN-6680-1 |
| Ubuntu 22.04 LTS | linux-azure-6.5 | 6.5.0-1016.16~22.04.1 | USN-6680-2 |
| Ubuntu 22.04 LTS | linux-hwe-6.5 | 6.5.0-25.25~22.04.1 | USN-6680-2 |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | 6.5.0-1014.14 | — |
| Ubuntu 22.04 LTS | linux-oem-6.5 | 6.5.0-1016.17 | USN-6680-1 |
| Ubuntu 22.04 LTS | linux-riscv +15 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.5 +1 | 6.5.0-25.25.1~22.04.1 | USN-6680-1 |
| Ubuntu 22.04 LTS | linux-starfive-6.5 | 6.5.0-1009.10~22.04.1 | USN-6680-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.153.1-1 | — |
Advisories 4
- USN-6680-1 linux, linux-gcp, linux-gcp-6.5, linux-laptop, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-oem-6.5, linux-oracle, linux-raspi, linux-starfive, linux-starfive-6.5 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6680-2 linux-azure, linux-azure-6.5, linux-hwe-6.5 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6680-3 linux-aws, linux-aws-6.5 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- WID-SEC-2023-3076 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Mar 19, 2024
References
- http://packetstormsecurity.com/files/176405/io_uring-__io_uaddr_map-Dangerous-Multi-Page-Handling.html
- https://access.redhat.com/security/cve/CVE-2023-6560 vdb-entry
- RHBZ#2253249 issue-tracking
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AU4NHBDEDLRW33O76Y6LFECEYNQET5GZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UCQIPFUQXKXRCH5Y4RP3C5NK4IHNBNVK/
- https://patchwork.kernel.org/project/io-uring/patch/20231130194633.649319-2-axboe@kernel.dk/