CVE-2026-80888drm/vmwgfx: drop dma_buf reference on foreign-fd prime import
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 92% 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/vmwgfx: drop dma_buf reference on foreign-fd prime import ttm_prime_fd_to_handle() returns -ENOSYS when the imported fd's dma_buf->ops do not match the ttm_object_device's ops, but does so without releasing the reference acquired by dma_buf_get(). Any unprivileged renderD client passing a non-vmwgfx prime fd through the DRM_VMW_GB_SURFACE_REF{,_EXT} path leaks one dma_buf reference per call and indefinitely pins the foreign exporter's GEM resources. Funnel the error path through the existing dma_buf_put() so the reference is always dropped.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 2 months later
· 2 months 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)
- 0.18% · top 92% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < 1715901e7052cf90fbf04c8303e563a47e021278
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < 619c3cfa88e09603a13d918f754808db2dda7057
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < c1c22fca0a0896a452a7cb92422d67babd65b4be
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < a1e972fa94c3a8069e022c67b9d97c7aa7b05293
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < a8434b145b1e467940334c58c00af241e9494c5f
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < 4df39eb99bb47d1f24d1952c23b21b10988356bf
- affected 65981f7681abdf92b25942222b629b9c512d0705 – < f739416dc555fa205a785e5135d73fa39b26f35d
- affected 3.13
- unaffected < 3.13
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.151 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/1715901e7052cf90fbf04c8303e563a47e021278 (opens in a new tab)
- https://git.kernel.org/stable/c/c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee (opens in a new tab)
- https://git.kernel.org/stable/c/619c3cfa88e09603a13d918f754808db2dda7057 (opens in a new tab)
- https://git.kernel.org/stable/c/c1c22fca0a0896a452a7cb92422d67babd65b4be (opens in a new tab)
- https://git.kernel.org/stable/c/a1e972fa94c3a8069e022c67b9d97c7aa7b05293 (opens in a new tab)
- https://git.kernel.org/stable/c/a8434b145b1e467940334c58c00af241e9494c5f (opens in a new tab)
- https://git.kernel.org/stable/c/4df39eb99bb47d1f24d1952c23b21b10988356bf (opens in a new tab)
- https://git.kernel.org/stable/c/f739416dc555fa205a785e5135d73fa39b26f35d (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-2026-71638 (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-2026-80888)Record last updated .