189 lines
8.0 KiB
JSON
189 lines
8.0 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-2021-47342",
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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": "2024-05-21T14:28:16.979Z",
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"datePublished": "2024-05-21T14:35:49.643Z",
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"dateUpdated": "2026-05-23T15:19:46.440Z"
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},
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"containers": {
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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": "2026-05-23T15:19:46.440Z"
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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\next4: fix possible UAF when remounting r/o a mmp-protected file system\n\nAfter commit 618f003199c6 (\"ext4: fix memory leak in\next4_fill_super\"), after the file system is remounted read-only, there\nis a race where the kmmpd thread can exit, causing sbi->s_mmp_tsk to\npoint at freed memory, which the call to ext4_stop_mmpd() can trip\nover.\n\nFix this by only allowing kmmpd() to exit when it is stopped via\next4_stop_mmpd().\n\nBug-Report-Link: <20210629143603.2166962-1-yebin10@huawei.com>"
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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/ext4/mmp.c",
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"fs/ext4/super.c"
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],
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{
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"version": "eb7b40d9d3785f7a131fb0b1f89bb6efa46c1833",
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"status": "affected",
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},
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{
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"version": "618f003199c6188e01472b03cdbba227f1dc5f24",
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"lessThan": "61bb4a1c417e5b95d9edb4f887f131de32e419cb",
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},
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{
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"version": "cecfdb9cf9a700d1037066173abac0617f6788df",
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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": "5.12.18",
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"lessThan": "5.13",
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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": "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/ext4/mmp.c",
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"fs/ext4/super.c"
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],
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"versions": [
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{
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"version": "5.10.51",
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"lessThan": "5.10.77",
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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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"cpeApplicability": [
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{
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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": "5.10.51",
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"versionEndExcluding": "5.10.77"
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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": "5.12.18"
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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/b663890d854403e566169f7e90aed5cd6ff64f6b"
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},
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{
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"url": "https://git.kernel.org/stable/c/7ed572cdf11081f8f9e07abd4bea56a3f2c4edbd"
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},
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{
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"url": "https://git.kernel.org/stable/c/61bb4a1c417e5b95d9edb4f887f131de32e419cb"
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}
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],
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"title": "ext4: fix possible UAF when remounting r/o a mmp-protected file system",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2021-47342",
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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": "2024-05-28T18:31:24.504163Z"
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}
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-06-04T17:15:04.055Z"
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}
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"shortName": "CVE",
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"dateUpdated": "2024-08-04T05:32:08.518Z"
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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/b663890d854403e566169f7e90aed5cd6ff64f6b",
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