260 lines
12 KiB
JSON
260 lines
12 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-2026-74735",
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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": "2026-08-15T05:44:03.930Z",
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"datePublished": "2026-08-26T14:36:49.352Z",
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"dateUpdated": "2026-10-30T12:30:27.082Z"
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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": "2026-10-30T12:30:27.082Z"
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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\nl2tp: fix tunnel and session refcount leak on seq_file release\n\nIn pppol2tp_proc_open() and l2tp_dfs_seq_open(), iteration state\n(pd->tunnel and pd->session) is kept in seq_file private data to allow\niteration across multiple read() system calls.\n\nHowever, if userspace closes /proc/net/pppol2tp or /sys/kernel/debug/l2tp/tunnels\nbefore reading to end-of-file (EOF), any tunnel or session reference stored in\npd->tunnel / pd->session is left un-dropped when seq_file private data is freed.\n\nFix this by dropping any remaining pd->tunnel and pd->session references in\npppol2tp_proc_release() and l2tp_dfs_seq_release() when closing the file."
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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/l2tp/l2tp_debugfs.c",
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"net/l2tp/l2tp_ppp.c"
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],
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"versions": [
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{
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"version": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "c38b723858a51d6ca4e56470b9f1087f23276772",
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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": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "bd897e414451fb34dfdf08b31899180e5ab7149b",
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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": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "bdf83613781956cc39798ed08321f74ab0467f4d",
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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": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500",
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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": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "ebe2774e956482dd3c70b8991f6f7654356339e6",
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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": "0e0c3fee3a59a387aeecc4fca6f3a2e9615a5443",
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"lessThan": "9006c116dd111d457bf5d074990210f70a4ad2c8",
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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": "f6104e9ae04462523c372928b1173766a771ef95",
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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": "7f8e401f9e612df2a95c1ef76217c00181389bb5",
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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": "c712ed63e9b33d9a282fbd92ce25c64918c3129f",
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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": "9a8863e8a8def9d88583cd9c60db38a008e6b8cf",
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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": "3.16.60",
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"lessThan": "3.17",
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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": "4.16.6",
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"lessThan": "4.17",
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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/l2tp/l2tp_debugfs.c",
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"net/l2tp/l2tp_ppp.c"
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],
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"versions": [
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{
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"version": "4.17",
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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": "4.17",
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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": "7.1.10",
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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": "4.17",
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"versionEndExcluding": "6.1.191"
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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": "4.17",
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"versionEndExcluding": "6.6.160"
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},
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"versionEndExcluding": "6.12.111"
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"versionStartIncluding": "4.17",
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"versionEndExcluding": "6.18.53"
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"versionEndExcluding": "7.1.10"
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},
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"versionEndExcluding": "7.2"
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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": "3.16.60"
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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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}
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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/c38b723858a51d6ca4e56470b9f1087f23276772"
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},
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{
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"url": "https://git.kernel.org/stable/c/bd897e414451fb34dfdf08b31899180e5ab7149b"
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},
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{
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"url": "https://git.kernel.org/stable/c/bdf83613781956cc39798ed08321f74ab0467f4d"
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},
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{
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"url": "https://git.kernel.org/stable/c/8c4fde01bcf91f22b9c7ded8c3e14addd7ddd500"
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},
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{
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"url": "https://git.kernel.org/stable/c/ebe2774e956482dd3c70b8991f6f7654356339e6"
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},
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{
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"url": "https://git.kernel.org/stable/c/9006c116dd111d457bf5d074990210f70a4ad2c8"
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}
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],
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"title": "l2tp: fix tunnel and session refcount leak on seq_file release",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |