PCI: Fix UAF when probe runs concurrent to dyn ID removal
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 7 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: Fix UAF when probe runs concurrent to dyn ID removal Dynamic IDs are only guaranteed to be valid when dynids.lock is held, as remove_id_store() can free the node. Thus, make a copy in pci_match_device(). Also, clarify that the id parameter is only valid during probe.
Why it matters now
EPSS 0.00206 10th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.114 +3Red Hat: 7 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.2.6, 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-2026-90421
- 2026-10-03 Alias added: GHSA-286w-pmvg-5rp9
- 2026-10-16 Fix available: Linux/[email protected], Linux/Linux@c36816feff47f676dcc51919777d483f4146c1ee · CNA
- 2026-10-16 1 new reference · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-10-21 Fix available: Linux/Linux@2cbcb0819c6367e1d5b0792a960594cc19576e23, Linux/[email protected], Linux/[email protected] +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@74133e74619d108eeaaa787d78906314d7a7b077 · CNA
- 2026-10-30 1 new reference · CNA
- 2026-11-01 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/74133e74619d108eeaaa787d78906314d7a7b077
- https://git.kernel.org/stable/c/d867db0a2602919510f346bc555f7b3093f6b6cc
- https://git.kernel.org/stable/c/2cbcb0819c6367e1d5b0792a960594cc19576e23
- https://git.kernel.org/stable/c/c36816feff47f676dcc51919777d483f4146c1ee
- https://git.kernel.org/stable/c/42a5661ff7e4c7d3c5025d0f8e5079fb5479ea49
- https://git.kernel.org/stable/c/3ffc4c9690c33ee28cdb3d0182b12f9c623e3acc
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Sources
- CVE-2026-90421 · CVE Program
- CVE-2026-90421 · NVD
- FIRST EPSS
- GHSA-286w-pmvg-5rp9 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-90421 · Red Hat security data · CC BY 4.0
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