Kernel: io_uring out of boundary memory access in __io_uaddr_map()
Published Dec 8, 2023
5.5
MEDIUMCVSS 3.1
EPSS 0.28%
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 n/a Product Kernel Defaultaffected
- ≤ 6.6
- 6.7
- 6.7
- 6.7
- 6.7
No data.
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 6
kernel-rt
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2023–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.28% (0.00282) | 18.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.28% (0.00282) | 19.66th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00041) | 9.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Dec 9, 2023 | 0.04% (0.00042) | 5.78th | v3 (v2023.03.01) |
References (8)
- 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-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2253249 issue-trackingx_refsource_REDHATIssue 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://nvd.nist.gov/vuln/detail/CVE-2023-6560
- https://patchwork.kernel.org/project/io-uring/patch/20231130194633.649319-2-axboe@kernel.dk/ Mailing ListPatch
- https://www.cve.org/CVERecord?id=CVE-2023-6560
Change history (0)
No recorded changes yet.