268 lines
13 KiB
JSON
268 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-46204",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-05-13T15:03:33.104Z",
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"datePublished": "2026-05-28T09:40:21.933Z",
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"dateUpdated": "2026-10-30T12:26:07.773Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:26:07.773Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/vcn4: Prevent OOB reads when parsing IB\n\nRewrite the IB parsing to use amdgpu_ib_get_value() which handles the\nbounds checks."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - Reached only via the local amdgpu command-submission ioctl (DRM_IOCTL_AMDGPU_CS) on a DRM render node; no network or adjacent vector is involved.\nAC:L - The attacker fully controls the IB contents, length_dw, and the backing BO size/layout, so positioning the parser so that idx+6..+8 reads cross the BO's last mapped page is reliably reproducible.\nPR:L - Requires the ability to open the DRM render node and submit command buffers, i.e. an unprivileged local user with GPU/graphics-session access; no elevated capability is needed.\nUI:N - The malicious command buffer is submitted directly by the attacker; no action by another user is required.\nS:U - Parsing runs on the CPU in kernel context and the OOB access stays within the kernel's own memory; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unchecked indexing reads kernel memory beyond the IB buffer object (decode_buffer fields and loop words), an out-of-bounds read of kernel memory that is not strictly limited to a couple of bytes.\nI:N - The flaw is purely an out-of-bounds read; the parser performs no OOB write and the OOB-derived address is re-validated before use, so no kernel data is modifiable.\nA:H - Reading past the BO into an unmapped kernel page faults during command submission, producing a kernel oops/crash that the attacker can trigger on demand."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c"
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],
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"versions": [
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "92724364702fd12d99f441a4af11d9c8bcd52217",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "1dc005775fb5b3f86464406452b17364f85581d3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "d0802a8877d730260d4af4dd4e0b6cde7e0e593f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "a6d5563ba1f03a049561cd347574613167294e8d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "5c3e8ebad0c9e2354ddfa8f2148dc4f70a3b4bd1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0b15205c7325dc20b7da0068307670d222d66949",
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"lessThan": "2444eb0ec8283f4a3845eb7febad378476e1ba3c",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c"
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],
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"versions": [
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{
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"version": "6.0",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.140",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.90",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.32",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0.9",
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"lessThanOrEqual": "7.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.6.140"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "6.12.90"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.18.32"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.0",
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"versionEndExcluding": "7.0.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "7.1"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/92724364702fd12d99f441a4af11d9c8bcd52217"
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},
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{
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"url": "https://git.kernel.org/stable/c/1dc005775fb5b3f86464406452b17364f85581d3"
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},
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{
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"url": "https://git.kernel.org/stable/c/d0802a8877d730260d4af4dd4e0b6cde7e0e593f"
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},
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{
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"url": "https://git.kernel.org/stable/c/a6d5563ba1f03a049561cd347574613167294e8d"
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},
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{
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"url": "https://git.kernel.org/stable/c/5c3e8ebad0c9e2354ddfa8f2148dc4f70a3b4bd1"
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},
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{
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"url": "https://git.kernel.org/stable/c/2444eb0ec8283f4a3845eb7febad378476e1ba3c"
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}
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],
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"title": "drm/amdgpu/vcn4: Prevent OOB reads when parsing IB",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-46204",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:21:08.264110Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T19:36:55.076Z"
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}
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}
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]
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}
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} |