{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-100082", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.456Z", "datePublished": "2026-11-06T18:23:02.627Z", "dateUpdated": "2026-11-06T19:08:45.432Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-06T18:23:02.627Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen-blkback: Avoid UAF when reading I/O statistics\n\nReading I/O statistics via sysfs concurrently with tearing down a\nfrontend device might result in UAF or a NULL dereference, as the\nreading of the statistics data is not synchronized with freeing the\ndata.\n\nUse a rwlock for synchronizing.\n\nThis is XSA-528 / CVE-2026-100082"}], "affected": [{"product": "Linux", "vendor": "Linux", 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/block/xen-blkback/common.h", "drivers/block/xen-blkback/xenbus.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "253cff0526781e28b1b0f9fdacd74ecdc23d3ab7", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "2c9ccbe0ffcff3615c7ad917c49b67571a41f21c", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "58ba056991dbcec8a75e6861cb4479ac947b69e6", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "b764e17313534794aeb99c901869f213e36a16ef", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "c49934da934cf495faf782aa5d84f413221c9be6", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "b0378161c28e77e4d0e2eda3c9433ab4394d2a2f", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "5.10.274", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "5.15.225", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.1.192", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.6.162", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.12.116", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.18.62", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "7.3.3", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/block/xen-blkback/common.h", "drivers/block/xen-blkback/xenbus.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.274", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.225", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.192", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.162", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.116", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.62", "versionType": "semver"}, {"lessThanOrEqual": "7.3.*", "status": "unaffected", "version": "7.3.3", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen-blkback: Avoid UAF when reading I/O statistics\n\nReading I/O statistics via sysfs concurrently with tearing down a\nfrontend device might result in UAF or a NULL dereference, as the\nreading of the statistics data is not synchronized with freeing the\ndata.\n\nUse a rwlock for synchronizing.\n\nThis is XSA-528 / CVE-2026-100082"}], "id": "CVE-2026-100082", "lastModified": "2026-11-06T19:17:03.517", "metrics": {}, "published": "2026-11-06T19:17:03.517", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/253cff0526781e28b1b0f9fdacd74ecdc23d3ab7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c9ccbe0ffcff3615c7ad917c49b67571a41f21c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58ba056991dbcec8a75e6861cb4479ac947b69e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b0378161c28e77e4d0e2eda3c9433ab4394d2a2f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b764e17313534794aeb99c901869f213e36a16ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c49934da934cf495faf782aa5d84f413221c9be6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/11/06/11"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://xenbits.xen.org/xsa/advisory-528.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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