drm/amdgpu: Release VFCT ACPI table reference
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: 8 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: drm/amdgpu: Release VFCT ACPI table reference amdgpu_acpi_vfct_bios() fetches the VFCT table with acpi_get_table() but never releases it. acpi_get_table() takes a reference on the table (incrementing its validation_count and mapping it on the 0->1 transition); without a paired acpi_put_table() the mapping is leaked on every call, whether or not a matching VBIOS image is found. Route all exit paths after the table is acquired through a common acpi_put_table(). The VBIOS image is copied out with kmemdup() before the table is released, so it remains valid for the caller. (cherry picked from commit ca5988682b4cba4cd125a0fa99b2de1239164ae4)
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 6.1.191, 6.6.160, 6.12.114, 6.18.42, 7.1.6, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. 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 Enterprise Linux for NVIDIA 26 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68238
- 2026-10-03 Alias added: GHSA-cp54-xgp7-w9qr
- 2026-10-21 Fix available: Linux/Linux@1748043b5114ce5ee5ee874d5f821a158d70631c, Linux/Linux@50a75929c0c5e8ab29a3ac49dc92489873d9d261, Linux/[email protected] +1 · CNA
- 2026-10-21 2 new references · CNA
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 Fix available: Linux/Linux@1c19e02a689661a9687d689dcc5995d3be538262, Linux/[email protected] · CNA
- 2026-10-30 1 new reference · CNA
References
Other 6
- https://git.kernel.org/stable/c/1c19e02a689661a9687d689dcc5995d3be538262
- https://git.kernel.org/stable/c/1748043b5114ce5ee5ee874d5f821a158d70631c
- https://git.kernel.org/stable/c/50a75929c0c5e8ab29a3ac49dc92489873d9d261
- https://git.kernel.org/stable/c/312278b3091912fa56a6a587609f17dcb33465c2
- https://git.kernel.org/stable/c/9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8
- https://git.kernel.org/stable/c/65bff26617607c1331283232016c0e89088c5b78
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Sources
- CVE-2026-68238 · CVE Program
- CVE-2026-68238 · NVD
- FIRST EPSS
- GHSA-cp54-xgp7-w9qr · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68238 · 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