iommu/amd: Bound the early ACPI HID map
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 5 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: iommu/amd: Bound the early ACPI HID map The ivrs_acpihid command-line parser appends entries to a fixed four-element early_acpihid_map array. Unlike the sibling IOAPIC and HPET parsers, it does not reject a fifth entry before incrementing the map size. Check the capacity at the common found label before parsing the HID and UID or writing the entry.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2
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 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| 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: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux for NVIDIA 26
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68325
- 2026-10-03 Alias added: GHSA-47v4-5f4v-xmxq
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score changed · Red Hat
- 2026-11-06 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/9ae6b1b972ce01d3316c8a5f7f58c8b3668cc6bb
- https://git.kernel.org/stable/c/e5e0098f8cd82f8b3c8687a8f686309565d51745
- https://git.kernel.org/stable/c/afe7ea0520c49586703f210865ace2d70b017e48
- https://git.kernel.org/stable/c/1e31d2394e0db69541b1591d46c5ad6431c81db3
- https://git.kernel.org/stable/c/abe5d7962f09adada9c4fb25b816dddd3f97c55d
- https://git.kernel.org/stable/c/e5ebe8544df1a1c3611739a8622156094fe470df
- https://git.kernel.org/stable/c/030a8e84f8f1b6e96f469c84a13a225c3699910b
- https://git.kernel.org/stable/c/fb80117fddb5b477218dc99bb53911b72c3847f8
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Sources
- CVE-2026-68325 · CVE Program
- CVE-2026-68325 · NVD
- FIRST EPSS
- GHSA-47v4-5f4v-xmxq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68325 · 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