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

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
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Linux Kernel Subscribe

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.openwall.com/lists/oss-security/2026/11/06/11 cve-icon
http://xenbits.xen.org/xsa/advisory-528.html cve-icon
https://git.kernel.org/stable/c/253cff0526781e28b1b0f9fdacd74ecdc23d3ab7 cve-icon cve-icon
https://git.kernel.org/stable/c/2c9ccbe0ffcff3615c7ad917c49b67571a41f21c cve-icon cve-icon
https://git.kernel.org/stable/c/58ba056991dbcec8a75e6861cb4479ac947b69e6 cve-icon cve-icon
https://git.kernel.org/stable/c/b0378161c28e77e4d0e2eda3c9433ab4394d2a2f cve-icon cve-icon
https://git.kernel.org/stable/c/b764e17313534794aeb99c901869f213e36a16ef cve-icon cve-icon
https://git.kernel.org/stable/c/c49934da934cf495faf782aa5d84f413221c9be6 cve-icon cve-icon
https://git.kernel.org/stable/c/fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b cve-icon cve-icon
History

Fri, 06 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
References

Fri, 06 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
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
Title xen-blkback: Avoid UAF when reading I/O statistics
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-11-06T19:08:45.432Z

Reserved: 2026-09-25T10:25:14.456Z

Link: CVE-2026-100082

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-06T19:17:03.517

Modified: 2026-11-06T19:17:03.517

Link: CVE-2026-100082

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.