291 lines
14 KiB
JSON
291 lines
14 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-2026-46197",
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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": "2026-05-28T09:40:13.722Z",
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"dateUpdated": "2026-10-19T19:36:54.598Z"
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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": "2026-08-05T12:30:21.898Z"
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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/amdkfd: validate SVM ioctl nattr against buffer size\n\nValidate nattr field against the buffer size, preventing\nout-of-bounds buffer access via user-controlled attribute count.\n\n(cherry picked from commit 5eca8bfdfa456c3304ca77523718fe24254c172f)"
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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:H/A:H",
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"baseScore": 7.8,
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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 - The vulnerability is reached through an ioctl (AMDKFD_IOC_SVM) on the /dev/kfd character device, requiring local system access; there is no network or adjacent vector.\nAC:L - The attacker fully controls both the buffer size (usize via _IOC_SIZE) and the nattr count, so the out-of-bounds access is triggered reliably with no conditions outside the attacker's control.\nPR:L - The SVM ioctl descriptor has flags=0 with no capability check, so only the ability to open /dev/kfd (a basic local user, e.g. render-group membership on compute systems) is required — no real root.\nUI:N - The attacker issues the ioctl directly; no action by another user or victim is needed.\nS:U - The corruption is confined to kernel memory within the same security authority; there is no IOMMU/DMA or VM boundary crossing.\nC:H - The unbounded nattr loop reads kernel heap/stack memory far past the buffer (an unbounded OOB read), and the resulting memory corruption can be leveraged for information disclosure.\nI:H - The svm_range_get_attr fill-values loop writes attrs[i].value/type out of bounds into adjacent kernel memory, an OOB write that can be leveraged for control-flow corruption or arbitrary write.\nA:H - A large nattr reliably drives the attribute loops past the allocation into unmapped memory, causing a kernel oops/panic (denial of service)."
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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/amdkfd/kfd_chardev.c",
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"drivers/gpu/drm/amd/amdkfd/kfd_priv.h"
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],
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"versions": [
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{
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"version": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "daa8bc5f83814b55b71d2b5b3a090d57a5219c21",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "fb07a0c9c8419164812e07274947f11b1d92dd61",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "91c6dc5a41695d02dfc6299f106ac38a6c493e52",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "ccd060b5c7cc75ae7e211c250b97c5b6272e7efc",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "db9530a9873a7c85d2266a922589ebcf427fa631",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "6abd3a4417cb73a7d0db7e25bf11fae1074bdba3",
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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": "42de677f79999791bee4e21be318c32d90ab62c6",
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"lessThan": "045e0ff208f0838a246c10204105126611b267a1",
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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/amdkfd/kfd_chardev.c",
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"drivers/gpu/drm/amd/amdkfd/kfd_priv.h"
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],
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"versions": [
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{
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"version": "5.14",
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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": "5.14",
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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": "5.15.209",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.175",
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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": "5.14",
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"versionEndExcluding": "5.15.209"
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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": "6.1.175"
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"versionStartIncluding": "5.14",
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"versionEndExcluding": "6.12.90"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/daa8bc5f83814b55b71d2b5b3a090d57a5219c21"
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},
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{
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"url": "https://git.kernel.org/stable/c/fb07a0c9c8419164812e07274947f11b1d92dd61"
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},
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{
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"url": "https://git.kernel.org/stable/c/91c6dc5a41695d02dfc6299f106ac38a6c493e52"
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},
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{
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"url": "https://git.kernel.org/stable/c/ccd060b5c7cc75ae7e211c250b97c5b6272e7efc"
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},
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{
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"url": "https://git.kernel.org/stable/c/db9530a9873a7c85d2266a922589ebcf427fa631"
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},
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{
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"url": "https://git.kernel.org/stable/c/6abd3a4417cb73a7d0db7e25bf11fae1074bdba3"
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},
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{
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"url": "https://git.kernel.org/stable/c/045e0ff208f0838a246c10204105126611b267a1"
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}
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],
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"title": "drm/amdkfd: validate SVM ioctl nattr against buffer size",
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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-2026-46197",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:20:59.237887Z"
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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-120",
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"description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
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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": "2026-10-19T19:36:54.598Z"
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}
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}
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]
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}
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} |