CVE-2026-80887 Affecting kernel6.18-headers 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-KERNEL618HEADERS-19815648
- published15 Sept 2026
- disclosed4 Sept 2026
Introduced: 4 Sep 2026
NewCVE-2026-80887 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 kernel6.18-headers 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-headers package and not the kernel6.18-headers 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: use check_add_overflow for shader size+offset bound
vmw_shader_define() validates the user-supplied shader window against its backing buffer with
(u64)buffer->tbo.base.size < (u64)size + (u64)offset
drm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is near U64_MAX the unsigned addition wraps and the resulting tiny value passes the check. The unbounded offset is then stored in res->guest_memory_offset and forwarded to host SVGA shader-create commands.
Use check_add_overflow() to detect the wrap and compare the resulting endpoint against the buffer size.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-80887
- https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3
- https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22
- https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21
- https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189
- https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9