CVE-2023-3389 — A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exp
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.
Published
2023-06-28T19:33:55.097Z
Last modified
2025-03-05T18:55:17.919Z
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.
02Affected products
| Vendor | Product | Versions |
|---|
| Linux | Kernel | 5.13, 5.10.162 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-06-28T19:33:55.097Z
- Last modified: 2025-03-05T18:55:17.919Z
09References
- git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux…
- git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux…
- kernel.dance — https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663
- kernel.dance — https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04
- git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef…
- kernel.dance — https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230731-0001/
- www.debian.org — https://www.debian.org/security/2023/dsa-5480
- packetstormsecurity.com — http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LS…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
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