272 lines
14 KiB
JSON
272 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-2026-72438",
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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": "2026-08-09T03:40:39.929Z",
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"datePublished": "2026-08-15T05:56:51.384Z",
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"dateUpdated": "2026-10-30T12:29:23.144Z"
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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": "2026-10-30T12:29:23.144Z"
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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\nmd/raid10: fix writes_pending and barrier reference leaks on discard failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before calling raid10_handle_discard(). Several failure\npaths in raid10_handle_discard() complete the bio and return without\nreleasing the corresponding reference, causing md_write_end() to be\nskipped.\n\nCall md_write_end() before returning from these failure paths to keep\nwrites_pending accounting balanced.\n\nAdditionally, discard split allocation failures can occur after\nwait_barrier() succeeds. Those paths return without calling\nallow_barrier(), leaking the associated barrier reference.\n\nRelease the barrier before returning from those paths."
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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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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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:N - RAID10 is commonly used on network-facing storage servers; discard/TRIM/UNMAP from remote iSCSI initiators or NFS clients reaches raid10_make_request() through the block layer without local host login.\nAC:L - An attacker can reliably trigger the bug by issuing large, stripe-misaligned discards to force bio_split() and inducing GFP_NOIO allocation failure via self-created memory pressure; no rare timing or victim state is required.\nPR:N - Exploitation requires only network reachability to a storage service that accepts discard/UNMAP/DEALLOCATE on the RAID10 LUN or exported filesystem, not Linux host administrator privileges or capabilities.\nUI:N - Discard, TRIM, punch-hole, and SCSI UNMAP are programmatic storage operations that do not require any interactive action by a human victim beyond normal automated I/O.\nS:U - The leaked writes_pending and barrier/nr_pending counters only corrupt RAID10/md internal accounting within the kernel storage stack and do not cross VM, container, or IOMMU security boundaries.\nC:N - The flaw is reference-count leakage on writes_pending and nr_pending with no out-of-bounds access, use-after-free, or memory disclosure; no confidential data is exposed.\nI:N - No memory corruption or unauthorized modification of user or filesystem data occurs; impact is limited to incorrect internal IO/barrier accounting rather than integrity compromise.\nA:H - Leaked nr_pending prevents raise_barrier() and freeze_array() from ever completing, causing indefinite kernel thread hangs during recovery/reshape/error handling and persistent denial of storage service on the array."
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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/md/raid10.c"
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],
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"versions": [
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{
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"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "2d264c00beadcc67f16d683ab27eed28c047ba2e",
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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": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "80ac31cce55432034a9eb98262c92ace7866e494",
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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": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "fea33968592559a55a3f5a96a6386bebcaf988a8",
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"status": "affected",
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},
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{
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"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "11b35d1906a7277a3d64afe34224133b44327328",
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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": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "d1324b41dabd26787559efaeb430643c627c1eb0",
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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": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
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"lessThan": "393d687131d8aa8c7e4de2cb494438e145d20fc2",
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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": "39db562b3fedb93978a7e42dd216b306740959f8",
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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": "5.15.111",
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"lessThan": "5.16",
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"status": "affected",
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"versionType": "semver"
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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/md/raid10.c"
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],
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"versions": [
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{
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"version": "5.17",
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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": "5.17",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.111",
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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": "6.18.53",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "5.17",
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"versionEndExcluding": "6.1.191"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2d264c00beadcc67f16d683ab27eed28c047ba2e"
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},
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{
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"url": "https://git.kernel.org/stable/c/80ac31cce55432034a9eb98262c92ace7866e494"
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},
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{
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"url": "https://git.kernel.org/stable/c/fea33968592559a55a3f5a96a6386bebcaf988a8"
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},
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{
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"url": "https://git.kernel.org/stable/c/11b35d1906a7277a3d64afe34224133b44327328"
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},
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{
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"url": "https://git.kernel.org/stable/c/d1324b41dabd26787559efaeb430643c627c1eb0"
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},
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{
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"url": "https://git.kernel.org/stable/c/393d687131d8aa8c7e4de2cb494438e145d20fc2"
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}
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],
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"title": "md/raid10: fix writes_pending and barrier reference leaks on discard failures",
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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-2026-72438",
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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": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:50:00.249923Z"
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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": "2026-10-16T18:55:24.215Z"
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}
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}
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]
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}
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} |