Vulnerability Description
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.10.162, < 5.10.185 |
| Canonical | Ubuntu Linux | 14.04 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linuxMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linuxMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=efMailing ListPatch
- https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663Patch
- https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04Patch
- https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59Patch
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20230731-0001/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5480Third Party Advisory
- http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSThird Party AdvisoryVDB Entry
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linuxMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linuxMailing ListPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=efMailing ListPatch
- https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663Patch
FAQ
What is CVE-2023-3389?
CVE-2023-3389 is a vulnerability with a CVSS score of 7.8 (HIGH). A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a U...
How severe is CVE-2023-3389?
CVE-2023-3389 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-3389?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux.