264 lines
14 KiB
JSON
264 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-2026-89497",
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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": "2026-09-11T19:38:34.714Z",
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"datePublished": "2026-09-11T19:43:47.439Z",
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"dateUpdated": "2026-10-19T08:47:48.916Z"
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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": "2026-10-19T08:47:48.916Z"
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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\norangefs: skip leading spaces before parsing client debug masks\n\norangefs_prepare_cdm_array() sizes each client debug keyword buffer\nwith strcspn(cds_head, \" \"), but then parses the keyword with %s. The\n%s conversion skips leading whitespace, while strcspn() does not.\n\nIf a client debug entry starts with a space, the allocation can be sized\nfor an empty keyword while sscanf() copies the following non-empty token.\nThis can write past the end of the allocated keyword buffer.\n\nSkip leading spaces before computing the keyword length so the allocation\nmatches the string parsed by sscanf()."
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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 overflow is reached only via ioctl(ORANGEFS_DEV_CLIENT_STRING) on /dev/pvfs2-req after orangefs_devreq_open(); orangefs_debugfs_new_client_string() copy_from_user()s the client debug-mask table from that local fd into orangefs_prepare_cdm_array(). Unlike readdir trailers, this string is not supplied by an OrangeFS server over the network.\nAC:L - A single CLIENT_STRING ioctl whose first newline-delimited entry begins with spaces then a long non-whitespace token deterministically makes strcspn() return 0 while sscanf(\"%s\") copies that token; the attacker fully controls the 2048-byte buffer and needs no race, heap layout, or other state outside their control.\nPR:L - orangefs_devreq_open() checks only init_user_ns, O_NONBLOCK, and exclusive open—no capability. The kernel documents mknod /dev/pvfs2-req, which is typically world-readable, and ioctl works on O_RDONLY, so an unprivileged local user can open the node when client-core is not holding it; user namespaces cannot open it, but init-ns DAC is enough.\nUI:N - The attacker opens /dev/pvfs2-req and issues the crafted CLIENT_STRING ioctl themselves. No victim must mount OrangeFS, start pvfs2-client-core, or otherwise interact; an already-loaded module and device node are deployment state, not user interaction.\nS:U - The heap overflow and any resulting kernel memory corruption or oops occur in the same kernel that services the ioctl. This is a standard local kernel compromise, not a VM/IOMMU/sandbox boundary crossing.\nC:H - sscanf(\"%s\") with no field width copies an attacker-chosen token (up to the 2048-byte ioctl buffer) into a kzalloc(1) keyword, a large heap overflow that can overwrite adjacent slab objects and pointers, yielding an arbitrary read primitive per CNA memory-corruption guidance.\nI:H - The same unbounded out-of-bounds write smashes heap metadata and neighboring objects with attacker-controlled bytes, which is sufficient for arbitrary write and control-flow hijack; CNA guidance rates heap buffer overflows High for integrity.\nA:H - Overflowing a 1-byte slab allocation by up to ~2KB of attacker data reliably corrupts the heap and can oops/panic the kernel even without a full exploit, so availability impact is High."
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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/orangefs/orangefs-debugfs.c"
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],
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"versions": [
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{
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"version": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "173bfd69696815bcf1c052f61cb69c26cca4e443",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "995f4d05589f87452a56672270af28918c8939c3",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "0ef38d53bca5ea1375fea0d3d11e9727df064b85",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "ce748ae1181d0daf5dd0d2d906d5c1cc328c153b",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "15d79c806231e62a7b746d3b42626810004e1b27",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "116d14f29a0524853c9316f32a2ac06cff5d4bf6",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "1774c5b3713add32fe15ab0d3db4b73355f94e35",
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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": "f7be4ee07fb72a516563bc2870ef41fa589a964a",
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"lessThan": "d410cd5303ec59c7cf23dd61423752ce8e9ecb59",
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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/orangefs/orangefs-debugfs.c"
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],
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"versions": [
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{
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"version": "4.6",
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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": "4.6",
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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": "5.10.270",
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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": "5.15.221",
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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": "6.1.188",
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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": "6.6.157",
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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": "6.12.109",
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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": "6.18.50",
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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": "7.2.4",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "4.6",
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"versionEndExcluding": "5.10.270"
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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": "4.6",
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"versionEndExcluding": "5.15.221"
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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": "4.6",
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"versionEndExcluding": "6.1.188"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "6.6.157"
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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": "4.6",
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"versionEndExcluding": "6.12.109"
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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": "4.6",
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"versionEndExcluding": "6.18.50"
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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": "4.6",
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"versionEndExcluding": "7.2.4"
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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": "4.6",
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"versionEndExcluding": "7.3"
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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/173bfd69696815bcf1c052f61cb69c26cca4e443"
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},
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{
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"url": "https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/0ef38d53bca5ea1375fea0d3d11e9727df064b85"
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},
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{
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"url": "https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b"
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},
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{
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"url": "https://git.kernel.org/stable/c/15d79c806231e62a7b746d3b42626810004e1b27"
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},
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{
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"url": "https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6"
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},
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{
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"url": "https://git.kernel.org/stable/c/1774c5b3713add32fe15ab0d3db4b73355f94e35"
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},
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{
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"url": "https://git.kernel.org/stable/c/d410cd5303ec59c7cf23dd61423752ce8e9ecb59"
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}
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],
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"title": "orangefs: skip leading spaces before parsing client debug masks",
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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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}
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} |