ALSA: dummy: Check card index validity at probe
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- 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: ALSA: dummy: Check card index validity at probe snd_dummy_probe() blindly trusts that the given devptr->id value is within the proper card index range. It's OK for the devices the driver itself creates at the module probe time, but if the device is bound manually via sysfs interface, this could be -1 as "none", and this leads to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.47, 7.1.11, 7.2.1, 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-2026-80812
- 2026-10-03 Alias added: GHSA-7cxv-m2m2-8qf9
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-01 Affected versions changed · Red Hat
- 2026-11-01 CVSS score added · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/b7579e86afcec932e169d10e2d603abed8dd2fdf
- https://git.kernel.org/stable/c/4d0892a90b57f0e89b274c3f3c51c2fa17937c88
- https://git.kernel.org/stable/c/b20eb7ecbdaa3e649023fe41b177d90983ffb487
- https://git.kernel.org/stable/c/c9f10a001c243d1f069ebb0e2f4999ad4043a254
- https://git.kernel.org/stable/c/f20c2c32ec1c5c3526f29a03b487c55a5890996c
- https://git.kernel.org/stable/c/3dba0e92e18980cb5a4d70a9a263539ae4f0c7ec
- https://git.kernel.org/stable/c/690b721b9595f9a43395fd4047a832c42b5b6078
- https://git.kernel.org/stable/c/02442d5fe8ee365a084b055d4fa81a0c1abfc3fd
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Sources
- CVE-2026-80812 · CVE Program
- CVE-2026-80812 · NVD
- FIRST EPSS
- GHSA-7cxv-m2m2-8qf9 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80812 · Red Hat security data · CC BY 4.0
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