CVE-2026-100082 (GCVE-0-2026-100082)
Vulnerability from cvelistv5 – Published: 2026-11-06 18:23 – Updated: 2026-11-06 19:08
VLAI
EPSS
VEX
Title
xen-blkback: Avoid UAF when reading I/O statistics
Summary
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
No CVSS data available.
Assigner
Linux
CNA
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 253cff0526781e28b1b0f9fdacd74ecdc23d3ab7
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2c9ccbe0ffcff3615c7ad917c49b67571a41f21c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 58ba056991dbcec8a75e6861cb4479ac947b69e6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b764e17313534794aeb99c901869f213e36a16ef (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c49934da934cf495faf782aa5d84f413221c9be6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b0378161c28e77e4d0e2eda3c9433ab4394d2a2f (git) Affected: 0 , < 5.10.274 (semver) Affected: 0 , < 5.15.225 (semver) Affected: 0 , < 6.1.192 (semver) Affected: 0 , < 6.6.162 (semver) Affected: 0 , < 6.12.116 (semver) Affected: 0 , < 6.18.62 (semver) Affected: 0 , < 7.3.3 (semver) |
|
| Linux | Linux |
Unaffected:
5.10.274 , ≤ 5.10.*
(semver)
Unaffected: 5.15.225 , ≤ 5.15.* (semver) Unaffected: 6.1.192 , ≤ 6.1.* (semver) Unaffected: 6.6.162 , ≤ 6.6.* (semver) Unaffected: 6.12.116 , ≤ 6.12.* (semver) Unaffected: 6.18.62 , ≤ 6.18.* (semver) Unaffected: 7.3.3 , ≤ 7.3.* (semver) |
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"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"
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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