226 lines
11 KiB
JSON
226 lines
11 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-2026-43063",
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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": "2026-05-01T14:12:55.981Z",
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"datePublished": "2026-05-05T15:23:24.034Z",
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"dateUpdated": "2026-10-19T19:06:12.211Z"
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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": "2026-08-05T12:25:41.403Z"
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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\nxfs: don't irele after failing to iget in xfs_attri_recover_work\n\nxlog_recovery_iget* never set @ip to a valid pointer if they return\nan error, so this irele will walk off a dangling pointer. Fix that."
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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 - Vulnerable code is reached during local XFS filesystem mount/log recovery from a block device or filesystem image, not through network input. A crafted XFS image or dirty log is the plausible attack vehicle.\nAC:L - No race or hard-to-control timing is required; a crafted recoverable XFS log item that makes inode lookup fail deterministically reaches the bad `xfs_irele` path. The needed log state is attacker-controlled in the malicious filesystem image.\nPR:N - The direct mount path requires `CAP_SYS_ADMIN` because XFS is not `FS_USERNS_MOUNT`, but an attacker can supply a malicious filesystem image for a privileged user or automounter to mount. In that highest reasonable scenario, the attacker needs no privileges on the target.\nUI:R - Exploitation requires the crafted XFS filesystem to be mounted or recovered by a user, administrator, or mounting service. No further user action is needed once recovery starts.\nS:U - The vulnerability corrupts kernel state within the same operating-system security authority. It is not a VM escape or other cross-scope boundary violation.\nC:H - The bug releases an uninitialized or dangling inode pointer during recovery, which is kernel memory corruption/use-after-free class behavior. Following the higher-severity rule, this is treated as potentially enabling kernel memory disclosure.\nI:H - The invalid inode release can corrupt kernel object lifetime/refcounts and may be exploitable beyond a simple crash. Following the higher-severity rule for dangling pointer memory corruption, integrity impact is High.\nA:H - At minimum, calling `xfs_irele` on an invalid or dangling pointer can crash or BUG the kernel during mount recovery. This gives high availability impact."
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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/xfs/xfs_attr_item.c"
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],
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"versions": [
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{
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"version": "ae673f534a30976ce5e709c4535a59c12b786ef3",
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"lessThan": "b5c5a50c2f513d4a13a6763564a07b470e69cc5a",
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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": "ae673f534a30976ce5e709c4535a59c12b786ef3",
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"lessThan": "a1a5df1038f0b3c560d204270373621a4e622808",
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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": "ae673f534a30976ce5e709c4535a59c12b786ef3",
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"lessThan": "40082d08b638485cbaa543dc8087a3d1844d6f08",
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"status": "affected",
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"versionType": "git"
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{
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"lessThan": "70685c291ef82269180758130394ecdc4496b52c",
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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/xfs/xfs_attr_item.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.12.80",
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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": "6.18.21",
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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": "6.19.11",
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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": "6.10",
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"versionEndExcluding": "6.12.80"
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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": "6.10",
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"versionEndExcluding": "6.18.21"
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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": "6.10",
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"versionEndExcluding": "6.19.11"
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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": "6.10",
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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/b5c5a50c2f513d4a13a6763564a07b470e69cc5a"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1a5df1038f0b3c560d204270373621a4e622808"
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},
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{
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"url": "https://git.kernel.org/stable/c/40082d08b638485cbaa543dc8087a3d1844d6f08"
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},
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{
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"url": "https://git.kernel.org/stable/c/70685c291ef82269180758130394ecdc4496b52c"
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}
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],
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"title": "xfs: don't irele after failing to iget in xfs_attri_recover_work",
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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-2026-43063",
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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": "2026-10-16T15:14:14.697660Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2026-10-19T19:06:12.211Z"
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}
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}
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]
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}
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} |