Buffer overflow in Linux Kernel
CVE-2023-6560
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel — versions 6.7
- Fedora
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Kernel — versions 6.7-rc5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- packetstormsecurity.com/files/176405/io_uring-__io_uaddr_map-Dangerous-Multi-Pa…
- access.redhat.com/security/cve/CVE-2023-6560 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- patchwork.kernel.org/project/io-uring/patch/20231130194633.649319-2-axboe@kerne… (Patch, Mailing List)
Frequently asked questions
- What is CVE-2023-6560?
- CVE-2023-6560 is a medium-severity vulnerability in Linux Kernel, classified under CWE-823. CVSS score: 5.5/10. Published 2023-12-09.
- How severe is CVE-2023-6560?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2023-6560 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.