CVE-2026-46006

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46006", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.092Z", "datePublished": "2026-05-27T12:56:05.273Z", "dateUpdated": "2026-08-05T12:29:06.114Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:06.114Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix u32 overflow in pushbuf reloc bounds check\n\nnouveau_gem_pushbuf_reloc_apply() validates each relocation with\n\n if (r->reloc_bo_offset + 4 > nvbo->bo.base.size)\n\nbut reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer\nliteral 4 promotes to unsigned int, so the addition is performed in 32\nbits and wraps before the comparison against the size_t bo size.\n\nCast to u64 so the addition happens in 64-bit arithmetic.\n\n[ Add Fixes: tag. - Danilo ]"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached through the DRM_IOCTL_NOUVEAU_GEM_PUSHBUF ioctl on the local GPU device/render node; it requires local system access, not network or adjacent reachability.\nAC:L - The attacker fully controls the relocation array (reloc_bo_offset, data, presumed fields) and can deterministically set reloc_bo_offset to 0xFFFFFFFC to wrap the check and force the write; there is no race or uncontrolled condition.\nPR:L - NOUVEAU_GEM_PUSHBUF is marked DRM_RENDER_ALLOW, so it is accessible to any unprivileged local user holding the render node (no root or DRM master required).\nUI:N - The attacking process issues the ioctl itself; no action by another user or victim is needed.\nS:U - The out-of-bounds write corrupts kernel memory within the kernel's own security authority and does not cross a VM/IOMMU/sandbox boundary.\nC:H - A controlled out-of-bounds kernel write of this kind is a memory-corruption primitive that can be leveraged to corrupt adjacent structures and ultimately disclose kernel memory.\nI:H - The flaw yields an out-of-bounds write of a largely attacker-controlled 32-bit value into kernel address space, an arbitrary-write-class primitive enabling control-flow/data corruption.\nA:H - The wild write at a fixed ~4 GB offset beyond the buffer mapping almost always hits unmapped/foreign memory, causing a kernel oops or panic."}]}], "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_gem.c"], "versions": [{"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "3429275684f4bad42876955301f3c5c814aae909", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "573a1104bd36e49c067a9dc62e7c476d5ee7e92a", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "45a45184b9c0b0b26ead06e370cda2073616a7cc", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "fa297e919d1680c38ab268ff952b1698dac987f6", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "d749a9a0ee4014681487e7ae549901aa8c176637", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "332884f5eb79dd60a7162b079d09d39208567a31", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "e441d5c23ec644c8d27593db3b8928e8933512a9", "status": "affected", "versionType": "git"}, {"version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "lessThan": "2fc87d37be1b730a149b035f9375fdb8cc5333a5", "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_gem.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "2.6.34", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3429275684f4bad42876955301f3c5c814aae909"}, {"url": "https://git.kernel.org/stable/c/573a1104bd36e49c067a9dc62e7c476d5ee7e92a"}, {"url": "https://git.kernel.org/stable/c/45a45184b9c0b0b26ead06e370cda2073616a7cc"}, {"url": "https://git.kernel.org/stable/c/fa297e919d1680c38ab268ff952b1698dac987f6"}, {"url": "https://git.kernel.org/stable/c/d749a9a0ee4014681487e7ae549901aa8c176637"}, {"url": "https://git.kernel.org/stable/c/332884f5eb79dd60a7162b079d09d39208567a31"}, {"url": "https://git.kernel.org/stable/c/e441d5c23ec644c8d27593db3b8928e8933512a9"}, {"url": "https://git.kernel.org/stable/c/2fc87d37be1b730a149b035f9375fdb8cc5333a5"}], "title": "drm/nouveau: fix u32 overflow in pushbuf reloc bounds check", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/nouveau/nouveau_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3429275684f4bad42876955301f3c5c814aae909", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "573a1104bd36e49c067a9dc62e7c476d5ee7e92a", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "45a45184b9c0b0b26ead06e370cda2073616a7cc", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "fa297e919d1680c38ab268ff952b1698dac987f6", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "d749a9a0ee4014681487e7ae549901aa8c176637", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "332884f5eb79dd60a7162b079d09d39208567a31", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "e441d5c23ec644c8d27593db3b8928e8933512a9", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}, {"lessThan": "2fc87d37be1b730a149b035f9375fdb8cc5333a5", "status": "affected", "version": "a1606a9596e54da90ad6209071b357a4c1b0fa82", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/nouveau/nouveau_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.34"}, {"lessThan": "2.6.34", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.259", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.209", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.175", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.140", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.86", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.27", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "910DA080-3DB1-4436-9683-809A8CBDBDB3", "versionEndExcluding": "5.15.209", "versionStartIncluding": "2.6.34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix u32 overflow in pushbuf reloc bounds check\n\nnouveau_gem_pushbuf_reloc_apply() validates each relocation with\n\n if (r->reloc_bo_offset + 4 > nvbo->bo.base.size)\n\nbut reloc_bo_offset is __u32 (uapi/drm/nouveau_drm.h) and the integer\nliteral 4 promotes to unsigned int, so the addition is performed in 32\nbits and wraps before the comparison against the size_t bo size.\n\nCast to u64 so the addition happens in 64-bit arithmetic.\n\n[ Add Fixes: tag. - Danilo ]"}], "id": "CVE-2026-46006", "lastModified": "2026-06-19T13:16:31.807", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-05-27T14:17:18.353", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2fc87d37be1b730a149b035f9375fdb8cc5333a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/332884f5eb79dd60a7162b079d09d39208567a31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3429275684f4bad42876955301f3c5c814aae909"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/45a45184b9c0b0b26ead06e370cda2073616a7cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/573a1104bd36e49c067a9dc62e7c476d5ee7e92a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d749a9a0ee4014681487e7ae549901aa8c176637"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e441d5c23ec644c8d27593db3b8928e8933512a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fa297e919d1680c38ab268ff952b1698dac987f6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/nouveau: fix u32 overflow in pushbuf reloc bounds check", "id": "2481939", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481939"}, "csaw": false, "cwe": "CWE-190", "details": ["A flaw was found in the Linux kernel's `drm/nouveau` driver. An integer overflow vulnerability exists in the `nouveau_gem_pushbuf_reloc_apply()` function. This occurs when a 32-bit unsigned integer `reloc_bo_offset` is used in a bounds check, and the addition of a small value can cause it to wrap around, leading to an incorrect comparison against the buffer size. This issue could potentially result in memory corruption or other unspecified security impacts."], "name": "CVE-2026-46006", "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"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46006\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46006\nhttps://lore.kernel.org/linux-cve-announce/2026052743-CVE-2026-46006-2a21@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a1606a9596e54da90ad6209071b357a4c1b0fa82,fa297e919d1680c38ab268ff952b1698dac987f6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a1606a9596e54da90ad6209071b357a4c1b0fa82,d749a9a0ee4014681487e7ae549901aa8c176637)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a1606a9596e54da90ad6209071b357a4c1b0fa82,332884f5eb79dd60a7162b079d09d39208567a31)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a1606a9596e54da90ad6209071b357a4c1b0fa82,e441d5c23ec644c8d27593db3b8928e8933512a9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a1606a9596e54da90ad6209071b357a4c1b0fa82,2fc87d37be1b730a149b035f9375fdb8cc5333a5)"}}], "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": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-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": "2026-05-27T22:15:25.997769+00:00", "updated": "2026-06-18T00:00:05.839737+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}