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Linux CVE-2026-99150

| EUVDEUVD-2026-111902
2026-10-28 Linux GHSA-9m2r-pjhq-4578
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Awaiting Data No severity or threat signals available yet. Label will update when CVSS score is published or threat intelligence arrives.
Patch available

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AnalysisCVE.org

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: don't drop the runtime PM reference twice in amdgpu_gpr

amdgpu_debugfs_gpr_read() drops its runtime PM reference right after reading the wave registers. When copying them to userspace fails, it jumps to the err label, which drops the reference a second time. A read into a bad buffer on Navi31 either steals a reference somebody else holds (power/runtime_usage goes from 1 to 0) or underflows the count:

amdgpu 0000:03:00.0: Runtime PM usage count underflow!

The registers are already in the kernel buffer at that point, so finish the hardware access first and copy the buffer with a single copy_to_user() instead of the put_user() loop with its own error path.

(cherry picked from commit 31035bbd74f7c3e10c163db875b8e67f8b50ee6a)

Affected VersionsENISA

Linux 9eee152aab56d374edb9ad21b3db05f5cdda2fe6 <253555a9baccefffe1f6e5f2fe54363c7c01ebb9
Linux 9eee152aab56d374edb9ad21b3db05f5cdda2fe6 <652b1f26125fe48aed5f4944698a85b457eef491
Linux patch: 7.3
Linux 5.9
Linux 865e2dbadf6856c9219626fbd6154cac44e5fbca
Linux patch: 6.18.59
Linux 5.8.2 <5.9
Linux 9eee152aab56d374edb9ad21b3db05f5cdda2fe6 <de9f6bcdb44f0e410031002e2f103826ea6b6259
Linux patch: 0
Linux patch: 7.2.13

Affected Packages

euvd linux fix: 5.9

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Lifecycle Timeline

2
Patch available
Oct 28, 2026 - 11:02 EUVD
CVE Published
Oct 28, 2026 - 10:35 cve.org
UNKNOWN (no severity yet)

Threat Intelligence Overview

Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity Not scored yet
CISA KEV No
Public POC No
EPSS N/A
Patch available Yes
Active threat No
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.
Awaiting Data No severity or threat signals available yet. Label will update when CVSS score is published or threat intelligence arrives.

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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