CVE-2026-80888None▾ SunlitIn 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_…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
Linux >= 65981f7681abdf92b25942222b629b9c512d0705 < 1715901e7052cf90fbf04c8303e563a47e021278Linux >= 65981f7681abdf92b25942222b629b9c512d0705 < c4fd91ee7228f56fbb4cf528757dc17ffefeb0eeLinux >= 65981f7681abdf92b25942222b629b9c512d0705 < 619c3cfa88e09603a13d918f754808db2dda7057Linux >= 65981f7681abdf92b25942222b629b9c512d0705 < c1c22fca0a0896a452a7cb92422d67babd65b4beLinux >= 65981f7681abdf92b25942222b629b9c512d0705 < a1e972fa94c3a8069e022c67b9d97c7aa7b05293Linux >= 65981f7681abdf92b25942222b629b9c512d0705 < a8434b145b1e467940334c58c00af241e9494c5fLinux >= 65981f7681abdf92b25942222b629b9c512d0705 < 4df39eb99bb47d1f24d1952c23b21b10988356bfLinux >= 65981f7681abdf92b25942222b629b9c512d0705 < f739416dc555fa205a785e5135d73fa39b26f35dLinux 3.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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