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vuln-cve/data/2026/46xxx/CVE-2026-46006.json
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{
"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"
},
{
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"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",
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},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
"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"
}
}
}
}
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