321 lines
16 KiB
JSON
321 lines
16 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-2024-56596",
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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": "2024-12-27T14:03:06.010Z",
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"datePublished": "2024-12-27T14:51:03.282Z",
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"dateUpdated": "2026-08-05T11:45:15.252Z"
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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": "2026-08-05T11:45:15.252Z"
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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\njfs: fix array-index-out-of-bounds in jfs_readdir\n\nThe stbl might contain some invalid values. Added a check to\nreturn error code in that case."
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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:N/UI:R/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 bug is triggered by a local `getdents64()`/readdir on a directory of a mounted JFS filesystem whose dtree page contains a negative `stbl[]` entry; there is no network-facing path into `jfs_readdir()`. Delivery of the crafted image is via local/removable media, so the vector is Local.\nAC:L - The attacker fully controls the on-disk image and can deterministically set `stbl[i]` to a negative value; no race, no memory-layout guess, and no condition outside attacker control is involved. Any directory listing of the crafted directory reliably triggers the out-of-bounds access.\nPR:N - The attacker needs no privileges or account on the target system — they only supply a malicious JFS image (e.g. USB media), and the subsequent `readdir` requires nothing beyond ordinary directory read permission. JFS is `FS_REQUIRES_DEV` without `FS_USERNS_MOUNT`, so mounting is done by the victim/automounter rather than by the attacker.\nUI:R - The crafted filesystem must be mounted by a user or automounter (udisks/desktop automount on kiosks and workstations) before the directory can be read. That mount action is the required user interaction.\nS:U - The out-of-bounds read and write stay within the kernel's own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Up to 4 KB of kernel memory preceding the dtree metapage or the `jfs_inode_info` slab object is read and then emitted to userspace as directory entry names and inode numbers via `dir_emit()`, giving a directly harvestable disclosure of adjacent heap contents including potential pointers and secrets.\nI:H - The same unvalidated negative index flows into `add_missing_indices()`, which performs `d->index = cpu_to_le32(add_index(...))` — a 4-byte out-of-bounds write at attacker-chosen negative offset — and stores the bad offset into the transaction linelock, corrupting adjacent kernel objects and journal metadata.\nA:H - Reading and writing up to 4 KB outside the metapage/slab object readily hits unmapped or poisoned memory, producing the KASAN-reported oops/panic seen by syzbot, and the stray write corrupts filesystem and journal state."
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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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"fs/jfs/jfs_dtree.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "b62f41aeec9d250144c53875b507c1d45ae8c8fc",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "97e693593162eef6851d232f0c8148169ed46a5c",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "9efe72eefd4c4a7ce63b3e4d667d766d2b360cb4",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "ff9fc48fab0e1ea0d423c23c99b91bba178f0b05",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "e7d376f94f72b020f84e77278b150ec1cc27502c",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "8ff7579554571d92e3deab168f5a7d7b146ed368",
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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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "839f102efb168f02dfdd46717b7c6dddb26b015e",
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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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"fs/jfs/jfs_dtree.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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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": "2.6.12",
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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": "5.4.287",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.231",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.174",
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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": "6.1.120",
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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": "6.6.66",
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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": "6.12.5",
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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": "6.13",
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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": "2.6.12",
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"versionEndExcluding": "5.4.287"
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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": "2.6.12",
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"versionEndExcluding": "5.10.231"
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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": "2.6.12",
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"versionEndExcluding": "5.15.174"
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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": "2.6.12",
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"versionEndExcluding": "6.1.120"
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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": "2.6.12",
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"versionEndExcluding": "6.6.66"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.12",
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"versionEndExcluding": "6.12.5"
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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": "2.6.12",
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"versionEndExcluding": "6.13"
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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/b62f41aeec9d250144c53875b507c1d45ae8c8fc"
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},
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{
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"url": "https://git.kernel.org/stable/c/97e693593162eef6851d232f0c8148169ed46a5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/9efe72eefd4c4a7ce63b3e4d667d766d2b360cb4"
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},
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{
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"url": "https://git.kernel.org/stable/c/ff9fc48fab0e1ea0d423c23c99b91bba178f0b05"
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},
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{
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"url": "https://git.kernel.org/stable/c/e7d376f94f72b020f84e77278b150ec1cc27502c"
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},
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{
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"url": "https://git.kernel.org/stable/c/8ff7579554571d92e3deab168f5a7d7b146ed368"
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},
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{
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"url": "https://git.kernel.org/stable/c/839f102efb168f02dfdd46717b7c6dddb26b015e"
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}
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],
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"title": "jfs: fix array-index-out-of-bounds in jfs_readdir",
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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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-2024-56596",
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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": "2025-10-01T20:01:31.920173Z"
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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-129",
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"description": "CWE-129 Improper Validation of Array Index"
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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": "2025-10-01T20:07:14.017Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T20:50:27.430Z"
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}
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}
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]
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}
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} |