{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68272","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.378Z","datePublished":"2026-08-10T12:01:47.708Z","dateUpdated":"2026-08-17T05:02:05.775Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:02:05.775Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1\n\nAdd a minimum-length check for the AMDGPU_CHUNK_ID_CP_GFX_SHADOW chunk in\namdgpu_cs_pass1(), matching the gate already present for the IB, FENCE and\nBO_HANDLES chunk types.\n\nThe CP_GFX_SHADOW case previously shared a bare break with the dependency\nand syncobj chunk types, which do not dereference a fixed-size struct. When\nuserspace submits this chunk with length_dw == 0, vmemdup_array_user() is\ncalled with size 0 and returns ZERO_SIZE_PTR, which passes the IS_ERR()\ncheck. amdgpu_cs_p2_shadow() then dereferences chunk->kdata as a struct\ndrm_amdgpu_cs_chunk_cp_gfx_shadow (reading shadow->flags), faulting on the\nZERO_SIZE_PTR and causing a NULL-pointer dereference.\n\nThis is reachable by an unprivileged process in the render group. Reject\nundersized chunks with -EINVAL during pass1 so the bad submission is\nrejected before pass2 ever dereferences the data.\n\n(cherry picked from commit 7f61b2eef7415eccdb40850aca0de94211948657)"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c"],"versions":[{"version":"ac9287055ff16a092416c76a19006764e4c6a978","lessThan":"3f190956404da55560056ce20606010e18bc059c","status":"affected","versionType":"git"},{"version":"ac9287055ff16a092416c76a19006764e4c6a978","lessThan":"2aa9ea2bd5146d237c8cc16d8737d878b0298a94","status":"affected","versionType":"git"},{"version":"ac9287055ff16a092416c76a19006764e4c6a978","lessThan":"315d2e5741a81b0be763e80413a2677e22b7e596","status":"affected","versionType":"git"},{"version":"ac9287055ff16a092416c76a19006764e4c6a978","lessThan":"24668ca3ec19434d7a9574bf9112f2b0614c3a4e","status":"affected","versionType":"git"},{"version":"ac9287055ff16a092416c76a19006764e4c6a978","lessThan":"84c4c36acd5c4b2558b5069f869a165b2c655c84","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c"],"versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3f190956404da55560056ce20606010e18bc059c"},{"url":"https://git.kernel.org/stable/c/2aa9ea2bd5146d237c8cc16d8737d878b0298a94"},{"url":"https://git.kernel.org/stable/c/315d2e5741a81b0be763e80413a2677e22b7e596"},{"url":"https://git.kernel.org/stable/c/24668ca3ec19434d7a9574bf9112f2b0614c3a4e"},{"url":"https://git.kernel.org/stable/c/84c4c36acd5c4b2558b5069f869a165b2c655c84"}],"title":"drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1","x_generator":{"engine":"bippy-1.2.0"}}}}