VulnerabilityPublished 10 Aug 2026Updated 6 Nov 2026

CVE-2026-68325: Linux kernel · iommu/amd: Bound the early ACPI HID map

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in fb80117fddb5b477218dc99bb53911b72c3847f8 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in fb80117fddb5b477218dc99bb53911b72c3847f8, e5ebe8544df1a1c3611739a8622156094fe470df, e5e0098f8cd82f8b3c8687a8f686309565d51745 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < fb80117fddb5b477218dc99bb53911b72c3847f8	Fixed in fb80117fddb5b477218dc99bb53911b72c3847f8
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < e5ebe8544df1a1c3611739a8622156094fe470df	Fixed in e5ebe8544df1a1c3611739a8622156094fe470df
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < e5e0098f8cd82f8b3c8687a8f686309565d51745	Fixed in e5e0098f8cd82f8b3c8687a8f686309565d51745
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < afe7ea0520c49586703f210865ace2d70b017e48	Fixed in afe7ea0520c49586703f210865ace2d70b017e48
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < abe5d7962f09adada9c4fb25b816dddd3f97c55d	Fixed in abe5d7962f09adada9c4fb25b816dddd3f97c55d
LinuxLinux	Affected ≥ ca3bf5d47cec8b7614bcb2e9132c40081d6d81db, < 030a8e84f8f1b6e96f469c84a13a225c3699910b	Fixed in 030a8e84f8f1b6e96f469c84a13a225c3699910b

Description

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.

References

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