CVE-2026-80888 Affecting kernel6.18-tools package, versions <1:6.18.44-99.149.amzn2023
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2023-KERNEL618TOOLS-19815329
- published15 Sept 2026
- disclosed4 Sept 2026
Introduced: 4 Sep 2026
NewCVE-2026-80888 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 kernel6.18-tools to version 1:6.18.44-99.149.amzn2023 or higher.
This issue was patched in ALAS2023-2026-2106.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel6.18-tools package and not the kernel6.18-tools package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-80888
- https://git.kernel.org/stable/c/4df39eb99bb47d1f24d1952c23b21b10988356bf
- https://git.kernel.org/stable/c/619c3cfa88e09603a13d918f754808db2dda7057
- https://git.kernel.org/stable/c/a1e972fa94c3a8069e022c67b9d97c7aa7b05293
- https://git.kernel.org/stable/c/a8434b145b1e467940334c58c00af241e9494c5f
- https://git.kernel.org/stable/c/c1c22fca0a0896a452a7cb92422d67babd65b4be
- https://git.kernel.org/stable/c/f739416dc555fa205a785e5135d73fa39b26f35d
- https://git.kernel.org/stable/c/1715901e7052cf90fbf04c8303e563a47e021278
- https://git.kernel.org/stable/c/c4fd91ee7228f56fbb4cf528757dc17ffefeb0ee