nouveau/gem: reserve the bo in the info ioctl around the vma lookup
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 7 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: nouveau/gem: reserve the bo in the info ioctl around the vma lookup In the non-uvmm path, there could be a race between the info lookup finding the vma, and the gem close path closing the vma leading to a use-after-free. Spotted with the help of Opus 4.6.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00135 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.273, 5.15.224, 6.1.191 +5Red Hat: 7 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89553
- 2026-10-03 Alias added: GHSA-9qfh-2fg7-437p
- 2026-10-18 CISA SSVC decision points changed
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-24 Affected versions changed · Red Hat
- 2026-10-24 CVSS score changed · Red Hat
- 2026-10-30 Fix available: Linux/Linux@24340ab41c33e16b3d64d89cb738ecd83c78de49, Linux/Linux@3e9c9090d4cc5a61ab5067ac5502c4fd37891b97, Linux/[email protected] +3 · CNA
- 2026-10-30 3 new references · CNA
- 2026-10-30 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/3e9c9090d4cc5a61ab5067ac5502c4fd37891b97
- https://git.kernel.org/stable/c/24340ab41c33e16b3d64d89cb738ecd83c78de49
- https://git.kernel.org/stable/c/f57e0d3bee3f7a459c048e10fd1cbcfd1dac2e0f
- https://git.kernel.org/stable/c/e05c28bd6043d0fd0bea9c3fc49300a8871a1a81
- https://git.kernel.org/stable/c/208867763843aa82efcbe3b771f1b8e6c7aa820a
- https://git.kernel.org/stable/c/ff110e85837d7ecd83f36078107be240ff5ae409
- https://git.kernel.org/stable/c/e60466011ac3a6b8045e6cc3c2cbb30d58039d2e
- https://git.kernel.org/stable/c/5e17160d41d92823f3379c1982e1369680c5ce4d
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Sources
- CVE-2026-89553 · CVE Program
- CVE-2026-89553 · NVD
- FIRST EPSS
- GHSA-9qfh-2fg7-437p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89553 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences