138 lines
7.2 KiB
JSON
138 lines
7.2 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-2026-43498",
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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": "2026-05-01T14:12:56.014Z",
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"datePublished": "2026-05-21T12:17:48.550Z",
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"dateUpdated": "2026-08-05T12:28:20.973Z"
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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": "2026-08-05T12:28:20.973Z"
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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\naccel/ivpu: Disallow re-exporting imported GEM objects\n\nPrevent re-exporting of imported GEM buffers by adding a custom\nprime_handle_to_fd callback that checks if the object is imported\nand returns -EOPNOTSUPP if so.\n\nRe-exporting imported GEM buffers causes loss of buffer flags settings,\nleading to incorrect device access and data corruption."
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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 accel/ivpu NPU driver is reachable only through local `/dev/accel/accelX` ioctls (BO_CREATE_FROM_USERPTR, PRIME_HANDLE_TO_FD/FD_TO_HANDLE, SUBMIT); it is not network- or adjacent-facing.\nAC:L - The exploit is a fully attacker-controlled, deterministic sequence (create RO userptr BO, re-export, re-import losing the RO flag, submit a write job) with no race or uncontrolled memory-layout dependency.\nPR:L - No root or capability is required—only access to the accel device node, which unprivileged local users typically hold on NPU-equipped systems; the ioctls carry no DRM_ROOT_ONLY/capable() gate.\nUI:N - The attacker performs every step (BO creation, re-export/re-import, NPU job submission) without any victim action.\nS:U - Impacted memory is all under the kernel's authority and the DMA/IOMMU isolation itself is not bypassed (pages are legitimately mapped, only the device-MMU read-only bit is dropped); this is standard in-OS privilege escalation.\nC:H - The resulting write primitive into shared read-only page-cache/executable pages can be leveraged for code execution in privileged contexts and thus arbitrary memory disclosure, and per guidance such memory corruption is scored High.\nI:H - The device, under attacker control, gains an arbitrary write into host pages that must be read-only (shared/file-backed/CoW pages), yielding controlled corruption of memory belonging to other contexts.\nA:H - Corrupting shared page-cache/executable pages or other processes' memory readily crashes processes and the system, a High availability impact consistent with memory-corruption guidance."
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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/accel/ivpu/ivpu_drv.c"
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],
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"versions": [
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{
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"version": "57557964b582238d5ee4b8538d1c4694f91c2186",
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"lessThan": "3756043dd695bba34cc728cdc5688dcb49ac8043",
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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": "57557964b582238d5ee4b8538d1c4694f91c2186",
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"lessThan": "7dd57d7a6350770dfc283287125c409e995200e0",
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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/accel/ivpu/ivpu_drv.c"
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],
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"versions": [
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{
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"version": "6.19",
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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": "6.19",
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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": "7.0.7",
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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": "6.19",
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"versionEndExcluding": "7.0.7"
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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": "6.19",
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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/3756043dd695bba34cc728cdc5688dcb49ac8043"
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},
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{
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"url": "https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"
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}
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],
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"title": "accel/ivpu: Disallow re-exporting imported GEM objects",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |