CVE-2026-80888
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.
Affected versions
Linux kernel versions
3.13
and later are affected. Fixed in
5.10.270,
5.15.221,
6.1.183,
6.6.151,
6.12.103,
6.18.44,
7.1.8,
7.2
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-80888?
CVE-2026-80888 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.13 onward and has been patched in 5.10.270, 5.15.221, 6.1.183 and others. CVE-2026-80888 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-80888?
Yes. CVE-2026-80888 has been patched. Fixed versions include 5.10.270, 5.15.221, 6.1.183 and others. If you are running Linux kernel 3.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-80888 actively exploited?
No. CVE-2026-80888 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.