310 lines
16 KiB
JSON
310 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-2026-72099",
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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": "2026-08-09T03:40:39.905Z",
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"datePublished": "2026-08-15T05:52:44.292Z",
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"dateUpdated": "2026-10-19T21:19:27.671Z"
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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": "2026-08-23T12:46:49.483Z"
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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\ndm-integrity: don't increment hash_offset twice\n\nhash_offset is already incremented in the loop \"for (i = 0; i < to_copy;\ni++, ts--)\". Do not increment it again."
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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:L/UI:N/S:U/C:N/I:H/A:L",
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"baseScore": 7.1,
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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 - The flaw is reached via block I/O on dm-integrity journal/bitmap targets; in enterprise/cloud deployments those volumes are commonly accessed remotely through NFS/ksmbd file exports or iSCSI/NVMe-oF/NBD block protocols, letting a remote client drive the vulnerable TAG_CMP path.\nAC:L - An attacker with read access can reliably trigger TAG_CMP by issuing ordinary multi-sector reads; when metadata tag comparisons span dm-bufio buffer boundaries the double-incremented hash_offset mispredicts tag boundaries without races or uncontrollable layout.\nPR:L - Table creation needs CAP_SYS_ADMIN (obtainable in a user namespace), but exploitation only requires read/write access to the mapped block device or an exported filesystem backed by it, not init-namespace root.\nUI:N - Exploitation requires only attacker-initiated reads or writes against the dm-integrity-backed storage; no additional victim actions such as mounting a filesystem or opening files beyond the attacker's own I/O are needed.\nS:U - Impact is incorrect integrity-tag verification within the host kernel's device-mapper layer, enabling undetected data tampering or spurious verification failures on the same host; it does not cross VM, container, or IOMMU security boundaries.\nC:N - The bug corrupts tag-boundary state during comparison but does not cause kernel memory disclosure, out-of-bounds reads, or use-after-free; any wrong data returned is attacker-supplied disk content, not leakage of unrelated kernel or user secrets.\nI:H - Misaligned hash_offset can accept integrity tags that should fail verification (including mixed hash/discard-filler boundaries), defeating dm-integrity's tamper detection and allowing undetected modification of protected block data.\nA:L - The same logic error can spuriously fail checksum verification on legitimate reads, returning I/O errors and denying access to protected data without kernel panic, though repeated reads can sustain a denial-of-service against the volume."
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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/dm-integrity.c"
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],
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"versions": [
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{
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"version": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "c66b1781a54984227e94b862be9328d81d81e51c",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "39697e2759ac23e65361fe61482f8174cad8a752",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "e6646f4d711d74930d39cce6fb7bfcae4cbee5fd",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "cf9feed8c131e303ecf2afebe6f791be018818ad",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "4f4e43337e9ef322595201cfc24def50fd624219",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "5dfd8042635278613da3b88553e25ade2103cd58",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "829476c06496aab018f14127c055adb164d1a750",
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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": "84597a44a9d86ac949900441cea7da0af0f2f473",
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"lessThan": "edf025f083854f80032b73a1aad69a3c90db236f",
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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/md/dm-integrity.c"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "5.10.266",
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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": "5.15.217",
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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": "6.1.184",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "5.7",
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"versionEndExcluding": "5.10.266"
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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": "5.7",
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"versionEndExcluding": "5.15.217"
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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": "5.7",
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"versionEndExcluding": "6.1.184"
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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": "5.7",
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"versionEndExcluding": "6.6.145"
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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": "5.7",
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"versionEndExcluding": "6.12.97"
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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": "5.7",
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"versionEndExcluding": "6.18.40"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "7.1.5"
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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": "5.7",
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"versionEndExcluding": "7.2"
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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/c66b1781a54984227e94b862be9328d81d81e51c"
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},
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{
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"url": "https://git.kernel.org/stable/c/39697e2759ac23e65361fe61482f8174cad8a752"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6646f4d711d74930d39cce6fb7bfcae4cbee5fd"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf9feed8c131e303ecf2afebe6f791be018818ad"
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},
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{
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"url": "https://git.kernel.org/stable/c/4f4e43337e9ef322595201cfc24def50fd624219"
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},
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{
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"url": "https://git.kernel.org/stable/c/5dfd8042635278613da3b88553e25ade2103cd58"
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},
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{
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"url": "https://git.kernel.org/stable/c/829476c06496aab018f14127c055adb164d1a750"
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},
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{
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"url": "https://git.kernel.org/stable/c/edf025f083854f80032b73a1aad69a3c90db236f"
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}
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],
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"title": "dm-integrity: don't increment hash_offset twice",
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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-2026-72099",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:51:53.051059Z"
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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-682",
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"description": "CWE-682 Incorrect Calculation"
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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": "2026-10-19T21:19:27.671Z"
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}
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}
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]
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}
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} |