{"id":"CVE-2026-80887","state":"PUBLISHED","title":"drm/vmwgfx: use check_add_overflow for shader size+offset bound","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: use check_add_overflow for shader size+offset bound\n\nvmw_shader_define() validates the user-supplied shader window against\nits backing buffer with\n\n\t(u64)buffer->tbo.base.size < (u64)size + (u64)offset\n\ndrm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is\nnear U64_MAX the unsigned addition wraps and the resulting tiny value\npasses the check.  The unbounded offset is then stored in\nres->guest_memory_offset and forwarded to host SVGA shader-create\ncommands.\n\nUse check_add_overflow() to detect the wrap and compare the resulting\nendpoint against the buffer size.","publishedAt":"2026-09-04T17:11:04.063Z","updatedAt":"2026-09-04T17:11:04.063Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"1bbe7751f5ebac383405ef29a66622d65bd505d3","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"d3f44438aa805270aaead3b6840ccaea0f4c11f9","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"cfd163169af3be56eaef113c680ea251f0d09189","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"5c725901908eb1e52a16fc0e2373cb761df42d21","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"54d56d5b42d2e4c72ba6e365e9774da90698aa22","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"]}],"references":["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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80887.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80887","state":"PUBLISHED","datePublished":"2026-09-04T17:11:04.063Z","dateUpdated":"2026-09-04T17:11:04.063Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.799Z"},"containers":{"cna":{"title":"drm/vmwgfx: use check_add_overflow for shader size+offset bound","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: use check_add_overflow for shader size+offset bound\n\nvmw_shader_define() validates the user-supplied shader window against\nits backing buffer with\n\n\t(u64)buffer->tbo.base.size < (u64)size + (u64)offset\n\ndrm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is\nnear U64_MAX the unsigned addition wraps and the resulting tiny value\npasses the check.  The unbounded offset is then stored in\nres->guest_memory_offset and forwarded to host SVGA shader-create\ncommands.\n\nUse check_add_overflow() to detect the wrap and compare the resulting\nendpoint against the buffer size."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"1bbe7751f5ebac383405ef29a66622d65bd505d3","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"d3f44438aa805270aaead3b6840ccaea0f4c11f9","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"cfd163169af3be56eaef113c680ea251f0d09189","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"5c725901908eb1e52a16fc0e2373cb761df42d21","versionType":"git"},{"version":"668b206601c5f5063e03b76784a0d3024fa2b249","status":"affected","lessThan":"54d56d5b42d2e4c72ba6e365e9774da90698aa22","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.151","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.103","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.44","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.8","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3"},{"url":"https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9"},{"url":"https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189"},{"url":"https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21"},{"url":"https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-09-04T17:11:04.063Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}