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Vulnerabilities

Vulnerability · CVE-2026-100082

CVE-2026-100082: xen-blkback: Avoid UAF when reading I/O statistics

Published Nov 6, 2026 · catalog updated Nov 6, 2026 · Linux Linux Kernel

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Open the advisory

Exploitation likelihood is not on this record for CVE-2026-100082. A missing EPSS score is not a low risk. Compare Linux Linux Kernel with the linked advisory before you change production.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.

Same product and reporting

Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Not in the current FIRST EPSS dataset
Remediation
Advisory link
Affected products
Debian:12 linux · Debian:13 linux · Debian:14 linux · linux kernel

From: Greg Kroah-Hartman 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 The Linux kernel CVE team has assigned CVE-2026-100082 to this issue. Affected and fixed versions =========================== Fixed in 5.10.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 linux6.1.106-1, 6.1.106-2, 6.1.106-3
  • Debian:13 linux6.12.100-1, 6.12.101-1, 6.12.105-1
  • Debian:14 linux6.12.100-1, 6.12.101-1, 6.12.105-1
  • linux kernelversion unspecified

How to fix CVE-2026-100082

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for CVE-2026-100082. A missing EPSS score is not a low risk. Compare Linux Linux Kernel with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 6.1.106-1, 6.1.106-2, 6.1.106-3, 6.12.100-1, 6.12.101-1, 6.12.105-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is absent from the current FIRST dataset. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 6, 2026 · OpenSSF OSV / OSV Scanner

    Detected

  2. Nov 6, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    The description or metadata changed.

  3. Nov 6, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    The description or metadata changed.

Sources

  • Linux Kernel CVEVendor advisoryCVE-2026-100082

    From: Greg Kroah-Hartman 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

    git.kernel.org
  • Openwall OSS SecurityThreat researchCVE-2026-100082

    Research mention from Openwall OSS Security. Not confirmation of exploitation.

    openwall.com
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-100082
    osv.dev

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Linux Kernel CVENov 7, 2026
  • Openwall OSS SecurityNov 7, 2026
  • OpenSSF OSV / OSV ScannerNov 7, 2026