CVE-2026-100082
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: xen-blkback: Avoid UAF when reading I/O statistics Reading I/O statistics via sysfs concurrently with tearing down a frontend device might result in UAF or a NULL dereference, as the reading of the statistics data is not synchronized with freeing the data. Use a rwlock for synchronizing. This is XSA-528 / CVE-2026-100082
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-11-06 19:17:03.517000
Last modified
2026-11-06 19:17:03.517000
View original CVE JSON
{
"id": "CVE-2026-100082",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-11-06T19:17:03.517",
"lastModified": "2026-11-06T19:17:03.517",
"vulnStatus": "Received",
"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"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"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",
"versions": [
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "253cff0526781e28b1b0f9fdacd74ecdc23d3ab7",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "2c9ccbe0ffcff3615c7ad917c49b67571a41f21c",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "58ba056991dbcec8a75e6861cb4479ac947b69e6",
"versionType": "git",
"status": "affected"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
"status": "affected"
},
{
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"lessThan": "b0378161c28e77e4d0e2eda3c9433ab4394d2a2f",
"versionType": "git",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.10.274",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.15.225",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
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"versionType": "semver",
"status": "affected"
},
{
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"lessThan": "6.6.162",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
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"versionType": "semver",
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},
{
"version": "0",
"lessThan": "6.18.62",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "7.3.3",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"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",
"versions": [
{
"version": "5.10.274",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.225",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.192",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.162",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.116",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.62",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3.3",
"lessThanOrEqual": "7.3.*",
"versionType": "semver",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"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",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
]
}