248 lines
13 KiB
JSON
248 lines
13 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-2025-71237",
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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": "2026-02-18T14:25:13.845Z",
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"datePublished": "2026-02-18T14:53:22.436Z",
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"dateUpdated": "2026-05-11T21:56:59.574Z"
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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": "2026-05-11T21:56:59.574Z"
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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\nnilfs2: Fix potential block overflow that cause system hang\n\nWhen a user executes the FITRIM command, an underflow can occur when\ncalculating nblocks if end_block is too small. Since nblocks is of\ntype sector_t, which is u64, a negative nblocks value will become a\nvery large positive integer. This ultimately leads to the block layer\nfunction __blkdev_issue_discard() taking an excessively long time to\nprocess the bio chain, and the ns_segctor_sem lock remains held for a\nlong period. This prevents other tasks from acquiring the ns_segctor_sem\nlock, resulting in the hang reported by syzbot in [1].\n\nIf the ending block is too small, typically if it is smaller than 4KiB\nrange, depending on the usage of the segment 0, it may be possible to\nattempt a discard request beyond the device size causing the hang.\n\nExiting successfully and assign the discarded size (0 in this case)\nto range->len.\n\nAlthough the start and len values in the user input range are too small,\na conservative strategy is adopted here to safely ignore them, which is\nequivalent to a no-op; it will not perform any trimming and will not\nthrow an error.\n\n[1]\ntask:segctord state:D stack:28968 pid:6093 tgid:6093 ppid:2 task_flags:0x200040 flags:0x00080000\nCall Trace:\n rwbase_write_lock+0x3dd/0x750 kernel/locking/rwbase_rt.c:272\n nilfs_transaction_lock+0x253/0x4c0 fs/nilfs2/segment.c:357\n nilfs_segctor_thread_construct fs/nilfs2/segment.c:2569 [inline]\n nilfs_segctor_thread+0x6ec/0xe00 fs/nilfs2/segment.c:2684\n\n[ryusuke: corrected part of the commit message about the consequences]"
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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/nilfs2/sufile.c"
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],
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"versions": [
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{
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"version": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "6457d3ee41a4c15082ac49c5aa7fb933b4a043f3",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "ba18e5f22f26aa4ef78bc3e81f639d1d4f3845e6",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "2438982f635e6cc2009be68ba2efb2998727d8d4",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "df1e20796c9f3d541cca47fb72e4369ea135642d",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "ea2278657ad0d62596589fbe2caf995e189e65e7",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "4aa45f841413cca81882602b4042c53502f34cad",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "b8c5ee234bd54f1447c846101fdaef2cf70c2149",
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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": "82e11e857be3ffd2a0a952c9db8aa2379e2b9e44",
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"lessThan": "ed527ef0c264e4bed6c7b2a158ddf516b17f5f66",
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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/nilfs2/sufile.c"
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],
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"versions": [
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{
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"version": "3.15",
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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": "3.15",
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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": "5.10.251",
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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": "5.15.201",
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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": "6.1.164",
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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": "6.6.125",
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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": "6.12.72",
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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": "6.18.11",
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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": "6.19.1",
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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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"nodes": [
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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": "3.15",
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"versionEndExcluding": "5.10.251"
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},
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"versionEndExcluding": "6.1.164"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "6.6.125"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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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/6457d3ee41a4c15082ac49c5aa7fb933b4a043f3"
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},
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{
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"url": "https://git.kernel.org/stable/c/ba18e5f22f26aa4ef78bc3e81f639d1d4f3845e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/2438982f635e6cc2009be68ba2efb2998727d8d4"
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},
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{
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"url": "https://git.kernel.org/stable/c/df1e20796c9f3d541cca47fb72e4369ea135642d"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea2278657ad0d62596589fbe2caf995e189e65e7"
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},
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{
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"url": "https://git.kernel.org/stable/c/4aa45f841413cca81882602b4042c53502f34cad"
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},
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{
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"url": "https://git.kernel.org/stable/c/b8c5ee234bd54f1447c846101fdaef2cf70c2149"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed527ef0c264e4bed6c7b2a158ddf516b17f5f66"
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}
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],
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"title": "nilfs2: Fix potential block overflow that cause system hang",
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"x_generator": {
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} |