CVE-2026-68271

{"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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/nouveau/nouveau_exec.c", "drivers/gpu/drm/nouveau/nouveau_uvmm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2473ac314387a5def7244eb6d6a345934ed140bf", "status": "affected", "version": "b88baab828713ce0b49b185444b2ee83bed373a8", "versionType": "git"}, {"lessThan": "e15c25c7972d38a9f6bf8c3f7f29179a67263eba", "status": "affected", "version": "b88baab828713ce0b49b185444b2ee83bed373a8", "versionType": "git"}, {"lessThan": "4e109faa9ea2b6c04cc5a99e76db3126575a59d1", "status": "affected", "version": "b88baab828713ce0b49b185444b2ee83bed373a8", "versionType": "git"}, {"lessThan": "ebbaf64d2635d1e78196c067fa8fa582a7dc17f7", "status": "affected", "version": "b88baab828713ce0b49b185444b2ee83bed373a8", "versionType": "git"}, {"lessThan": "ab99ead646b1b833ecd57fe577a2816f2e848167", "status": "affected", "version": "b88baab828713ce0b49b185444b2ee83bed373a8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/nouveau/nouveau_exec.c", "drivers/gpu/drm/nouveau/nouveau_uvmm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-68271", "lastModified": "2026-08-17T05:18:29.633", "metrics": {}, "published": "2026-08-10T13:20:16.097", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2473ac314387a5def7244eb6d6a345934ed140bf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e109faa9ea2b6c04cc5a99e76db3126575a59d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ab99ead646b1b833ecd57fe577a2816f2e848167"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e15c25c7972d38a9f6bf8c3f7f29179a67263eba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebbaf64d2635d1e78196c067fa8fa582a7dc17f7"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel (drm/nouveau): Denial of Service due to improper error cleanup", "id": "2513350", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513350"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/nouveau: fix reversed error cleanup order in ucopy functions\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.\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.\nFix by swapping the cleanup label order so resources are freed in the\ncorrect reverse allocation sequence.", "A flaw was found in the Linux kernel's `drm/nouveau` module. An issue with the error cleanup order in `ucopy` functions can lead to incorrect memory deallocation. This can result in a system crash, also known as a kernel oops, or a memory leak, potentially causing a denial of service."], "name": "CVE-2026-68271", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:01:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68271\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68271\nhttps://git.kernel.org/stable/c/2473ac314387a5def7244eb6d6a345934ed140bf\nhttps://git.kernel.org/stable/c/4e109faa9ea2b6c04cc5a99e76db3126575a59d1\nhttps://git.kernel.org/stable/c/ab99ead646b1b833ecd57fe577a2816f2e848167\nhttps://git.kernel.org/stable/c/e15c25c7972d38a9f6bf8c3f7f29179a67263eba\nhttps://git.kernel.org/stable/c/ebbaf64d2635d1e78196c067fa8fa582a7dc17f7"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b88baab828713ce0b49b185444b2ee83bed373a8,2473ac314387a5def7244eb6d6a345934ed140bf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b88baab828713ce0b49b185444b2ee83bed373a8,e15c25c7972d38a9f6bf8c3f7f29179a67263eba)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b88baab828713ce0b49b185444b2ee83bed373a8,4e109faa9ea2b6c04cc5a99e76db3126575a59d1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b88baab828713ce0b49b185444b2ee83bed373a8,ebbaf64d2635d1e78196c067fa8fa582a7dc17f7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b88baab828713ce0b49b185444b2ee83bed373a8,ab99ead646b1b833ecd57fe577a2816f2e848167)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T18:15:11.382137+00:00", "updated": "2026-08-13T06:45:04.718803+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}