CVE-2026-99090drm/amdgpu: serialize vblank counter reads against GPU reset
- —Not scoredno CVSS score yet
- 0.16%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: serialize vblank counter reads against GPU reset The vblank counter callback reads display registers and scanout position without holding reset_domain->sem. During GPU recovery, display commit work can call the callback while reset owns the semaphore for writing. The hardware access then triggers the lockdep_assert_held() in amdgpu_device_skip_hw_access() and sets TAINT_WARN when lockdep is enabled. Try to acquire the reset semaphore for reading before accessing the hardware, and hold it across the counter and scanout-position reads. If reset is already in progress, return DRM's cached software vblank count instead. This avoids blocking behind reset and avoids accessing display hardware while it is being reset. The cached count is less accurate than the hardware count, but is used only when reset prevents a safe hardware read. This addresses the reset-time warning from this vblank path; it does not suppress or fix unrelated lockdep warnings. (cherry picked from commit 51a4359f7431a4be5e42803c8bdaf7e0e5be2934)
Timeline
ID reserved
By Linux
- 31 days later
· 31 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 – < 037796d9ca1da97978deaefd88ca5649f6cb69f5
- affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 – < 11b6193c8841a052b7907006ffb1e02468b1448e
- affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 – < 8d6f773d7479034a574ecc3b585bcd07d46b4824
- affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 – < f4a0a1ce147d1a6e428d7cb5e3b99fd695139fc7
- affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 – < 1a6023edfbb5673f55fab6348f135fb3b1428ea5
- affected 4.2
- unaffected < 4.2
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.11 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/037796d9ca1da97978deaefd88ca5649f6cb69f5 (opens in a new tab)
- https://git.kernel.org/stable/c/11b6193c8841a052b7907006ffb1e02468b1448e (opens in a new tab)
- https://git.kernel.org/stable/c/8d6f773d7479034a574ecc3b585bcd07d46b4824 (opens in a new tab)
- https://git.kernel.org/stable/c/f4a0a1ce147d1a6e428d7cb5e3b99fd695139fc7 (opens in a new tab)
- https://git.kernel.org/stable/c/1a6023edfbb5673f55fab6348f135fb3b1428ea5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-109896 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-99090)Record last updated .