CVE-2026-80887: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 668b206601c5f5063e03b76784a0d3024fa2b249 преди 1bbe7751f5ebac383405ef29a66622d65bd505d3; 668b206601c5f5063e03b76784a0d3024fa2b249 преди d3f44438aa805270aaead3b6840ccaea0f4c11f9; 668b206601c5f5063e03b76784a0d3024fa2b249 преди cfd163169af3be56eaef113c680ea251f0d09189; 668b206601c5f5063e03b76784a0d3024fa2b249 преди 5c725901908eb1e52a16fc0e2373cb761df42d21; 668b206601c5f5063e03b76784a0d3024fa2b249 преди 54d56d5b42d2e4c72ba6e365e9774da90698aa22
• Linux Linux: 6.4; преди 6.4; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-80887
• https://nvd.nist.gov/vuln/detail/CVE-2026-80887
• https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3
• https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9
• https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189
• https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21
• https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22