{"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","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/xen-blkback/common.h","drivers/block/xen-blkback/xenbus.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"253cff0526781e28b1b0f9fdacd74ecdc23d3ab7","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2c9ccbe0ffcff3615c7ad917c49b67571a41f21c","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"58ba056991dbcec8a75e6861cb4479ac947b69e6","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"b764e17313534794aeb99c901869f213e36a16ef","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"c49934da934cf495faf782aa5d84f413221c9be6","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"b0378161c28e77e4d0e2eda3c9433ab4394d2a2f","status":"affected","versionType":"git"},{"version":"0","lessThan":"5.10.274","status":"affected","versionType":"semver"},{"version":"0","lessThan":"5.15.225","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.1.192","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.6.162","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.12.116","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.18.62","status":"affected","versionType":"semver"},{"version":"0","lessThan":"7.3.3","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/xen-blkback/common.h","drivers/block/xen-blkback/xenbus.c"],"versions":[{"version":"5.10.274","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.225","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.192","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.162","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.116","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.62","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.3.3","lessThanOrEqual":"7.3.*","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.192"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.116"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.62"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/253cff0526781e28b1b0f9fdacd74ecdc23d3ab7"},{"url":"https://git.kernel.org/stable/c/2c9ccbe0ffcff3615c7ad917c49b67571a41f21c"},{"url":"https://git.kernel.org/stable/c/58ba056991dbcec8a75e6861cb4479ac947b69e6"},{"url":"https://git.kernel.org/stable/c/fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b"},{"url":"https://git.kernel.org/stable/c/b764e17313534794aeb99c901869f213e36a16ef"},{"url":"https://git.kernel.org/stable/c/c49934da934cf495faf782aa5d84f413221c9be6"},{"url":"https://git.kernel.org/stable/c/b0378161c28e77e4d0e2eda3c9433ab4394d2a2f"}],"title":"xen-blkback: Avoid UAF when reading I/O statistics","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/11/06/11"},{"url":"http://xenbits.xen.org/xsa/advisory-528.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-11-06T19:08:45.432Z"}}]}}