VulnerabilityPublished 18 Oct 2026Updated 21 Oct 2026

CVE-2026-98779: Linux kernel · drm/amdgpu: fix ACP MFD device leak on init failure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f0013046151b7467e62c471c1c83d63ea255799c : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f0013046151b7467e62c471c1c83d63ea255799c, d700c26ed64bd3c26e4aa7679b9d5f3333c3747a, abf854513bc19e6e24d45353ac99ec5627ee0acc +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 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 ≥ 25030321ba2860c56651429a4f28d94a6483d952, < f0013046151b7467e62c471c1c83d63ea255799c	Fixed in f0013046151b7467e62c471c1c83d63ea255799c
LinuxLinux	Affected ≥ 25030321ba2860c56651429a4f28d94a6483d952, < d700c26ed64bd3c26e4aa7679b9d5f3333c3747a	Fixed in d700c26ed64bd3c26e4aa7679b9d5f3333c3747a
LinuxLinux	Affected ≥ 25030321ba2860c56651429a4f28d94a6483d952, < abf854513bc19e6e24d45353ac99ec5627ee0acc	Fixed in abf854513bc19e6e24d45353ac99ec5627ee0acc
LinuxLinux	Affected ≥ 25030321ba2860c56651429a4f28d94a6483d952, < 587469076e4ffb617f7ad1a0c4a13072a3e87113	Fixed in 587469076e4ffb617f7ad1a0c4a13072a3e87113
LinuxLinux	Affected ≥ 25030321ba2860c56651429a4f28d94a6483d952, < 2b9a53940a2bc063ea4cd09ee49220a503a0170c	Fixed in 2b9a53940a2bc063ea4cd09ee49220a503a0170c
LinuxLinux	Affected =4.6	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix ACP MFD device leak on init failure acp_hw_init() registers ACP child devices with mfd_add_devices() before attaching them to the ACP power domain and initializing the hardware. If attaching a child to the power domain fails, or if the ACP reset or clock enable operation times out, the failure path frees only the source cell, resource, and platform-data allocations. The child platform devices already registered by mfd_add_devices() remain registered and are never released. Remove the children from the power domain and unregister the MFD devices on failures that occur after mfd_add_devices() succeeds. Keep mfd_add_devices() failures on the existing cleanup path since the MFD core already rolls back partially registered children itself. The issue was identified by a static analysis tool I developed and confirmed by manual review. (cherry picked from commit 63da68d6a2279ec945581c990c5a59a5ae8b5560)

References

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