396 lines
18 KiB
JSON
396 lines
18 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-2021-47294",
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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": "2024-05-21T13:27:52.130Z",
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"datePublished": "2024-05-21T14:35:18.034Z",
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"dateUpdated": "2026-05-23T15:19:39.451Z"
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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": "2026-05-23T15:19:39.451Z"
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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\nnetrom: Decrease sock refcount when sock timers expire\n\nCommit 63346650c1a9 (\"netrom: switch to sock timer API\") switched to use\nsock timer API. It replaces mod_timer() by sk_reset_timer(), and\ndel_timer() by sk_stop_timer().\n\nFunction sk_reset_timer() will increase the refcount of sock if it is\ncalled on an inactive timer, hence, in case the timer expires, we need to\ndecrease the refcount ourselves in the handler, otherwise, the sock\nrefcount will be unbalanced and the sock will never be freed."
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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/netrom/nr_timer.c"
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],
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"versions": [
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{
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"version": "ce29e8a259de767f7210d346ad2b031cb8ab2732",
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"lessThan": "853262355518cd1247515b74e83fabf038aa6c29",
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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": "baa9e32336bf6d0d74a7c3486d2a27feaf57cd5f",
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"lessThan": "a01634bf91f2b6c42583770eb6815fb6d1e251cf",
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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": "0adf571fa34b27bd0b97b408cc0f0dc54b72f0eb",
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"lessThan": "48866fd5c361ea417ed24b43fc2a7dc2f5b060ef",
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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": "2c6b572458a9127e8070df13fa7f115c29ab1d92",
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"lessThan": "9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950",
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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": "63346650c1a94a92be61a57416ac88c0a47c4327",
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"lessThan": "25df44e90ff5959b5c24ad361b648504a7e39ef3",
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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": "63346650c1a94a92be61a57416ac88c0a47c4327",
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"lessThan": "6811744bd0efb9e472cb15d066cdb460beb8cb8a",
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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": "63346650c1a94a92be61a57416ac88c0a47c4327",
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"lessThan": "bc1660206c3723c37ed4d622ad81781f1e987250",
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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": "63346650c1a94a92be61a57416ac88c0a47c4327",
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"lessThan": "517a16b1a88bdb6b530f48d5d153478b2552d9a8",
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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": "f1d9a1f2ef6ff17293d21d5e6b80e04bea0cf508",
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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": "519e8a22a454b1f1baa3a151b184fe51bc18e178",
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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": "4.4.173",
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"lessThan": "4.4.277",
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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": "4.9.155",
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"lessThan": "4.9.277",
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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": "4.14.98",
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"lessThan": "4.14.241",
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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": "4.19.20",
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"lessThan": "4.19.199",
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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": "3.18.134",
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"lessThan": "3.19",
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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": "4.20.7",
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"lessThan": "4.21",
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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/netrom/nr_timer.c"
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],
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"versions": [
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{
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"version": "5.0",
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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": "5.0",
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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": "4.4.277",
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"lessThanOrEqual": "4.4.*",
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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": "4.9.277",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.241",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.199",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.136",
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"lessThanOrEqual": "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": "5.10.54",
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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": "5.13.6",
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"lessThanOrEqual": "5.13.*",
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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": "5.14",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.4.173",
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"versionEndExcluding": "4.4.277"
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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/853262355518cd1247515b74e83fabf038aa6c29"
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},
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{
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"url": "https://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950"
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},
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{
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"url": "https://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3"
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},
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{
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"url": "https://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a"
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},
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{
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"url": "https://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250"
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},
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{
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"url": "https://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8"
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}
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],
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"title": "netrom: Decrease sock refcount when sock timers expire",
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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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"title": "CISA ADP Vulnrichment",
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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-2021-47294",
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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": "2024-05-28T19:24:54.424642Z"
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}
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"dateUpdated": "2024-06-04T17:14:49.177Z"
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}
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"dateUpdated": "2024-08-04T05:32:08.527Z"
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},
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"title": "CVE Program Container",
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"references": [
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"url": "https://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29",
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} |