VulnerabilityPublished 10 Aug 2026Updated 21 Oct 2026

CVE-2026-68238: Linux kernel · drm/amdgpu: Release VFCT ACPI table reference

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 1748043b5114ce5ee5ee874d5f821a158d70631c : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1748043b5114ce5ee5ee874d5f821a158d70631c, 312278b3091912fa56a6a587609f17dcb33465c2, 65bff26617607c1331283232016c0e89088c5b78 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 1748043b5114ce5ee5ee874d5f821a158d70631c	Fixed in 1748043b5114ce5ee5ee874d5f821a158d70631c
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 312278b3091912fa56a6a587609f17dcb33465c2	Fixed in 312278b3091912fa56a6a587609f17dcb33465c2
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 65bff26617607c1331283232016c0e89088c5b78	Fixed in 65bff26617607c1331283232016c0e89088c5b78
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 50a75929c0c5e8ab29a3ac49dc92489873d9d261	Fixed in 50a75929c0c5e8ab29a3ac49dc92489873d9d261
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8	Fixed in 9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8
LinuxLinux	Affected =4.2	Fixed in–

Description

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)

References

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