{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68271","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.378Z","datePublished":"2026-08-10T12:01:46.534Z","dateUpdated":"2026-08-17T05:02:04.681Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:02:04.681Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix reversed error cleanup order in ucopy functions\n\nnouveau_uvmm_vm_bind_ucopy() and nouveau_exec_ucopy() place their error\ncleanup labels in allocation order rather than reverse allocation order.\nOn a u_memcpya() failure for in_sync.s, the goto to err_free_ops (or\nerr_free_pushs) frees the first allocation and then falls through to\nerr_free_ins, which calls u_free() on args->in_sync.s.\n\nSince args->in_sync.s still holds the ERR_PTR returned by the failed\nu_memcpya(), and ERR_PTR values are not caught by ZERO_OR_NULL_PTR(),\nkvfree() proceeds to dereference it, which can result in a kernel oops.\nA failure for out_sync.s instead jumps to err_free_ins and skips freeing\nthe first allocation, leading to a memory leak.\n\nFix by swapping the cleanup label order so resources are freed in the\ncorrect reverse allocation sequence."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/nouveau/nouveau_exec.c","drivers/gpu/drm/nouveau/nouveau_uvmm.c"],"versions":[{"version":"b88baab828713ce0b49b185444b2ee83bed373a8","lessThan":"2473ac314387a5def7244eb6d6a345934ed140bf","status":"affected","versionType":"git"},{"version":"b88baab828713ce0b49b185444b2ee83bed373a8","lessThan":"e15c25c7972d38a9f6bf8c3f7f29179a67263eba","status":"affected","versionType":"git"},{"version":"b88baab828713ce0b49b185444b2ee83bed373a8","lessThan":"4e109faa9ea2b6c04cc5a99e76db3126575a59d1","status":"affected","versionType":"git"},{"version":"b88baab828713ce0b49b185444b2ee83bed373a8","lessThan":"ebbaf64d2635d1e78196c067fa8fa582a7dc17f7","status":"affected","versionType":"git"},{"version":"b88baab828713ce0b49b185444b2ee83bed373a8","lessThan":"ab99ead646b1b833ecd57fe577a2816f2e848167","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/nouveau/nouveau_exec.c","drivers/gpu/drm/nouveau/nouveau_uvmm.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","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":"6.6","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2473ac314387a5def7244eb6d6a345934ed140bf"},{"url":"https://git.kernel.org/stable/c/e15c25c7972d38a9f6bf8c3f7f29179a67263eba"},{"url":"https://git.kernel.org/stable/c/4e109faa9ea2b6c04cc5a99e76db3126575a59d1"},{"url":"https://git.kernel.org/stable/c/ebbaf64d2635d1e78196c067fa8fa582a7dc17f7"},{"url":"https://git.kernel.org/stable/c/ab99ead646b1b833ecd57fe577a2816f2e848167"}],"title":"drm/nouveau: fix reversed error cleanup order in ucopy functions","x_generator":{"engine":"bippy-1.2.0"}}}}