159 lines
7.9 KiB
JSON
159 lines
7.9 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-2026-23280",
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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": "2026-01-13T15:37:45.992Z",
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"datePublished": "2026-03-25T10:26:41.088Z",
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"dateUpdated": "2026-08-05T12:21:08.197Z"
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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": "2026-08-05T12:21:08.197Z"
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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/amdxdna: Prevent ubuf size overflow\n\nThe ubuf size calculation may overflow, resulting in an undersized\nallocation and possible memory corruption.\n\nUse check_add_overflow() helpers to validate the size calculation before\nallocation."
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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 triggered via a DRM ioctl (AMDXDNA_CREATE_BO) on a local accelerator device node (/dev/accel/accelN), requiring local system access.\nAC:L - The integer overflow is reliably triggered by providing crafted va_entry len values that sum to wrap around. No race condition or special conditions beyond attacker control are required.\nPR:L - The ioctl is defined with flags 0 (no DRM_ROOT_ONLY), so any user who can open the accel device node can trigger it. On systems with AMD XDNA hardware, logged-in desktop users typically have access via the render group.\nUI:N - No user interaction is needed; the attacker directly issues the ioctl.\nS:U - The vulnerability is a kernel memory corruption within the kernel's security authority; no cross-boundary escape (VM, IOMMU) is involved.\nC:H - The heap buffer overflow writes page structure pointers beyond the allocated array, corrupting adjacent kernel heap objects. This memory corruption can be leveraged to read arbitrary kernel memory.\nI:H - The heap buffer overflow corrupts kernel heap metadata and adjacent objects, which can be exploited for arbitrary write primitives and code execution via heap spraying techniques.\nA:H - The heap corruption will cause kernel crashes (oops/panic) when corrupted objects are subsequently accessed."
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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/amdxdna/amdxdna_ubuf.c"
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],
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"versions": [
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{
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"version": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
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"lessThan": "1500b31db94374a6669e73ce94d6f71cf8e85e06",
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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": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
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"lessThan": "972bf4a23478fcb247b4f507d47a584bc8aea5bd",
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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": "bd72d4acda1069579b35123e3cc0b21ec1193a21",
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"lessThan": "03808abb1d868aed7478a11a82e5bb4b3f1ca6d6",
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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/amdxdna/amdxdna_ubuf.c"
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],
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"versions": [
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{
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"version": "6.18",
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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": "6.18",
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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": "6.18.17",
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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": "6.19.7",
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"lessThanOrEqual": "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",
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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": "6.18",
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"versionEndExcluding": "6.18.17"
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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": "6.18",
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"versionEndExcluding": "6.19.7"
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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": "6.18",
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"versionEndExcluding": "7.0"
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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/1500b31db94374a6669e73ce94d6f71cf8e85e06"
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},
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{
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"url": "https://git.kernel.org/stable/c/972bf4a23478fcb247b4f507d47a584bc8aea5bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6"
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}
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],
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"title": "accel/amdxdna: Prevent ubuf size overflow",
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"x_generator": {
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}
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}
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}
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} |