CVE-2026-80888
drm/vmwgfx: drop dma_buf reference on foreign-fd prime import
No known exploitation. EPSS puts it in the 11th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 11th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 12 days, from the signal feeds we watch.
- Record updated
- OpenVAS check added
- Publishedrecord updated
- OpenVAS check added
Affected products
Sources
References in the record
- git.kernel.org/stable/c/1715901e7052cf90fbf04c8303e563a47e021278
- git.kernel.org/stable/c/c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee
- git.kernel.org/stable/c/619c3cfa88e09603a13d918f754808db2dda7057
And 5 more references. See all after sign-in
In the news
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