207 lines
11 KiB
JSON
207 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-2026-98231",
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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": "2026-09-25T10:25:14.328Z",
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"datePublished": "2026-10-06T08:45:05.183Z",
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"dateUpdated": "2026-10-19T09:16:03.101Z"
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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": "2026-10-19T09:16:03.101Z"
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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\nxfrm: serialize state GC with device state flush\n\nThe deferred-device pass in xfrm_dev_state_flush() finds states under\nxfrm_state_dev_gc_lock, but drops the lock before calling\nxfrm_dev_state_free() because the driver callback may sleep. The device\nGC list does not hold an xfrm_state reference, so the state GC worker can\ndestroy the same state concurrently.\n\nThe race can proceed as follows:\n\n CPU 0 CPU 1\n find x on the device GC list\n drop xfrm_state_dev_gc_lock\n read x->xso.dev\n xfrm_state_gc_destroy(x)\n xfrm_dev_state_free(x)\n xfrm_state_free(x)\n continue xfrm_dev_state_free(x)\n\nBoth paths can invoke the driver callback and drop the device reference.\nCPU 0 can also access the xfrm_state after CPU 1 has freed it.\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in xfrm_dev_state_free+0x24c/0x2a0\n Read of size 8 at addr ffff88810bbaa960 by task poc/102\n\n Call Trace:\n xfrm_dev_state_free+0x24c/0x2a0\n xfrm_dev_state_flush+0x353/0x400\n xfrm_dev_event+0x26d/0x3a0\n notifier_call_chain+0xc0/0x280\n __dev_notify_flags+0x169/0x250\n netif_change_flags+0xe7/0x160\n dev_change_flags+0x96/0x220\n devinet_ioctl+0x7f4/0x1880\n\n Allocated by task 87:\n xfrm_state_alloc+0x1e/0x5c0\n xfrm_add_sa+0xe7f/0x5820\n xfrm_user_rcv_msg+0x4f3/0x940\n\n Freed by task 57:\n kmem_cache_free+0xcb/0x3d0\n xfrm_state_gc_task+0x4a8/0x650\n process_one_work+0x63a/0x1070\n\nSerialize xfrm_state destruction against the deferred-device pass with a\nmutex. Keep xfrm_state_dev_gc_lock limited to list operations and retain\nthe existing callback and device-reference release ordering."
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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/xfrm/xfrm_state.c"
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],
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"versions": [
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{
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"version": "d5f53edd43daf3e6e1633a49c561387f8f99e13f",
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"lessThan": "937108dc0258d6ac69926b00bc53598c98986ee1",
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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": "07b87f9eea0c30675084d50c82532d20168da009",
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"lessThan": "39e41af3653ee45c985190dd97426f318918d201",
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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": "07b87f9eea0c30675084d50c82532d20168da009",
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"lessThan": "75fc4561772e2f9811abf39ed10443e6f4a4bc6c",
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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": "07b87f9eea0c30675084d50c82532d20168da009",
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"lessThan": "84e378395494963b1e581cf223a7cbeec8c0e2d6",
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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": "07b87f9eea0c30675084d50c82532d20168da009",
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"lessThan": "89fefad9f971bc637fb22373078144f2563c4be9",
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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": "8ecee44464a4926c9bef989a1490b7394785f584",
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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": "6.6.44",
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"lessThan": "6.6.158",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.10.3",
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"lessThan": "6.11",
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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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"net/xfrm/xfrm_state.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.6.158",
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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": "6.12.112",
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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": "6.18.54",
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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": "7.2.8",
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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": "6.6.44",
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"versionEndExcluding": "6.6.158"
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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": "6.11",
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"versionEndExcluding": "6.12.112"
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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": "6.11",
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"versionEndExcluding": "6.18.54"
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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": "6.11",
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"versionEndExcluding": "7.2.8"
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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": "6.11",
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"versionEndExcluding": "7.3"
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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": "6.10.3"
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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/937108dc0258d6ac69926b00bc53598c98986ee1"
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},
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{
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"url": "https://git.kernel.org/stable/c/39e41af3653ee45c985190dd97426f318918d201"
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},
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{
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"url": "https://git.kernel.org/stable/c/75fc4561772e2f9811abf39ed10443e6f4a4bc6c"
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},
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{
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"url": "https://git.kernel.org/stable/c/84e378395494963b1e581cf223a7cbeec8c0e2d6"
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},
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{
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"url": "https://git.kernel.org/stable/c/89fefad9f971bc637fb22373078144f2563c4be9"
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}
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],
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"title": "xfrm: serialize state GC with device state flush",
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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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} |