VulnerabilityPublished 28 Oct 2026

CVE-2026-99148: Linux kernel · drm/amdgpu: keep the eviction fence until the last handle is closed

Source GCVE Database

Authoritative record:CVE-2026-99148

Not known to be exploited · fixed in dce8f7f03a47b1744dccf506268f9229b67fab47 : update Linux kernel when convenient.

Data as of 28 Oct 2026, 13:58 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in dce8f7f03a47b1744dccf506268f9229b67fab47, 6467c4cc83b94850bfea614e9f98276edf9a7c3f, 3c44cbcec5eb370713bbd2c315ed7c34d8ccec2b

Exploitation evidence

Disclosed: evidence found.
CVE published 28 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.

ghsa-xpw2-c5ch-25qm

What to do

Upgrade Linux kernel to dce8f7f03a47b1744dccf506268f9229b67fab47, 6467c4cc83b94850bfea614e9f98276edf9a7c3f or 3c44cbcec5eb370713bbd2c315ed7c34d8ccec2b.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 31f7efcdca4d1caaa3a0babc33377e27e6f9b593, < dce8f7f03a47b1744dccf506268f9229b67fab47	Fixed in dce8f7f03a47b1744dccf506268f9229b67fab47
LinuxLinux	Affected ≥ 31f7efcdca4d1caaa3a0babc33377e27e6f9b593, < 6467c4cc83b94850bfea614e9f98276edf9a7c3f	Fixed in 6467c4cc83b94850bfea614e9f98276edf9a7c3f
LinuxLinux	Affected ≥ 31f7efcdca4d1caaa3a0babc33377e27e6f9b593, < 3c44cbcec5eb370713bbd2c315ed7c34d8ccec2b	Fixed in 3c44cbcec5eb370713bbd2c315ed7c34d8ccec2b
LinuxLinux	Affected =6.16	Fixed in–
Debiandebian/linux`pkg:deb/debian/linux`Other threats	Affected =6.16	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch has been applied to the Linux kernel AMDGPU driver to fix this issue by ensuring the eviction fence is kept until the last handle to the buffer object is closed. Users should update to a Linux kernel version including this fix. Since this is a kernel-level fix, applying the official kernel update is the recommended mitigation.

Description

A vulnerability in the Linux kernel's AMDGPU driver involves improper handling of the eviction fence for buffer objects (BO). The eviction fence is detached prematurely when closing one handle to a BO, even if other handles remain open, potentially allowing the BO to be evicted while still in use. This issue was observed on Navi31 with an SDMA user queue. The fix ensures the eviction fence remains until the last handle to the BO is closed, preventing premature eviction.

References

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