289 lines
15 KiB
JSON
289 lines
15 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-2026-22997",
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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": "2026-01-13T15:37:45.938Z",
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"datePublished": "2026-01-25T14:36:12.053Z",
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"dateUpdated": "2026-10-19T18:25:26.725Z"
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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": "2026-08-05T12:20:01.212Z"
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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\nnet: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts\n\nSince j1939_session_deactivate_activate_next() in j1939_tp_rxtimer() is\ncalled only when the timer is enabled, we need to call\nj1939_session_deactivate_activate_next() if we cancelled the timer.\nOtherwise, refcount for j1939_session leaks, which will later appear as\n\n| unregister_netdevice: waiting for vcan0 to become free. Usage count = 2.\n\nproblem."
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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 - The vulnerable path is reached by received SAE J1939 transport-control frames delivered through the CAN network receive path into j1939_can_recv(), j1939_tp_recv(), j1939_tp_cmd_recv(), j1939_xtp_rx_rts(), and then j1939_xtp_rx_rts_session_active(). A remote CAN/J1939 peer can send the duplicate RTS/BAM sequence to a Linux node using a bound J1939 socket, so the attacker does not need local execution on the target.\nAC:L - The trigger is a controlled protocol sequence involving a second RTS/BAM for an active receiver session; the attacker controls the packet timing and contents. No hard-to-win race or condition outside attacker influence is required.\nPR:N - Received CAN/J1939 frames enter the vulnerable receive path without authentication or credential checks. In the highest reasonable deployment, the attacker is an unauthenticated peer on the J1939/CAN network.\nUI:N - No victim interaction is required once the target is running the J1939 stack with a bound socket. The attacker only needs to transmit the crafted J1939 frames.\nS:U - The bug affects kernel CAN/J1939 session and netdevice lifetime management within the same kernel security authority. It does not cross a VM, sandbox, IOMMU, or other separate security boundary.\nC:N - The bug is a reference-count leak caused by failing to deactivate a receiver session after cancelling its timer. The investigation did not identify memory disclosure, arbitrary read, or use-after-free behavior.\nI:N - The leaked references pin session/private/netdevice objects but do not provide attacker-controlled data modification or a write primitive. There is no evidence of control-flow corruption or persistent data tampering.\nA:H - The leaked J1939 session/private references pin the CAN net_device and can make unregister_netdevice wait indefinitely with a nonzero usage count. This is a persistent denial of service against network device or namespace teardown and can be retriggered."
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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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"net/can/j1939/transport.c"
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],
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"versions": [
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{
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"version": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "a73e7d7e346dae1c22dc3e95b02ca464b12daf2c",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "adabf01c19561e42899da9de56a6a1da0e6b8a5b",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "b1d67607e97d489c0cfbbf55f48a76b00710b0e4",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "809a437e27a3bf3c1c6c8c157773635552116f2b",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "cb2a610867bc379988bae0bb4b8bbc59c0decf1a",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "6121b7564c725b632ffe4764abe85aa239d37703",
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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": "9d71dd0c70099914fcd063135da3c580865e924c",
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"lessThan": "1809c82aa073a11b7d335ae932d81ce51a588a4a",
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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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"net/can/j1939/transport.c"
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],
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"versions": [
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{
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"version": "5.4",
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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": "5.4",
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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": "5.10.249",
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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": "5.15.199",
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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": "6.1.162",
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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": "6.6.122",
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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": "6.12.67",
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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": "6.18.7",
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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",
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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": "5.4",
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"versionEndExcluding": "5.10.249"
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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": "5.4",
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"versionEndExcluding": "5.15.199"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a73e7d7e346dae1c22dc3e95b02ca464b12daf2c"
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},
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{
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"url": "https://git.kernel.org/stable/c/adabf01c19561e42899da9de56a6a1da0e6b8a5b"
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},
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{
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"url": "https://git.kernel.org/stable/c/b1d67607e97d489c0cfbbf55f48a76b00710b0e4"
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},
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{
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"url": "https://git.kernel.org/stable/c/809a437e27a3bf3c1c6c8c157773635552116f2b"
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},
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{
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"url": "https://git.kernel.org/stable/c/cb2a610867bc379988bae0bb4b8bbc59c0decf1a"
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},
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{
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"url": "https://git.kernel.org/stable/c/6121b7564c725b632ffe4764abe85aa239d37703"
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},
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{
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"url": "https://git.kernel.org/stable/c/1809c82aa073a11b7d335ae932d81ce51a588a4a"
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}
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],
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"title": "net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts",
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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-2026-22997",
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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": "2026-06-16T20:36:25.922251Z"
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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-772",
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"description": "CWE-772 Missing Release of Resource after Effective Lifetime"
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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": "2026-10-19T18:25:26.725Z"
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}
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}
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]
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}
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} |