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CVE-2023-6931
Out-of-bounds write in Linux kernel's Performance Events system component
High7.8EPSS 0.71%
- Published
- Updated
- Reserved
- Assigned by
Description
A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GoogleCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.71% · top 46% of all CVEs (7 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 4.3.0 – < 4.19.302
- affected 4.20.0 – < 5.4.264
- affected 5.5.0 – < 5.10.204
- affected 5.11.0 – < 5.15.143
- affected 5.16.0 – < 6.1.68
- affected 6.2.0 – < 6.6.7
- unaffected 6.7.0
- unaffected 382c27f4ed28f803b1f1473ac2d8db0afc795a1b
References (8)
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b (opens in a new tab)patchx_transferred
- https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-6931)Record last updated .