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Vulnerabilities

Vulnerability · CVE-2026-23032

In the Linux kernel, the following vulnerability has been resolved: null_blk: fix kmemleak by releasing references to fault configfs items When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECT

Published Jan 31, 2026 · catalog updated Jun 2, 2026 · Linux Linux

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-23032. EPSS is 0.23%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.23%
Remediation
Version ranges on file
Affected products
vendor Linux Linux bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5

In the Linux kernel, the following vulnerability has been resolved: null_blk: fix kmemleak by releasing references to fault configfs items When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk driver sets up fault injection support by creating the timeout_inject, requeue_inject, and init_hctx_fault_inject configfs items as children of the top-level nullbX configfs group. However, when the nullbX device is removed, the references taken to these fault-config configfs items are not released. As a result, kmemleak reports a memory leak, for example: unreferenced object 0xc00000021f

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.

  • vendor Linux Linux bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5

How to fix CVE-2026-23032

  • Upgrade

    CVE-2026-23032 lists a fix boundary at 40b94ec7edbbb867c4e26a1a43d2b898f04b93c5. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2026-23032. EPSS is 0.23%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5 bb4c19e030f45c5416f1eb4daa94fbaf7165e9ea <40b94ec7edbbb867c4e26a1a43d2b898f04b93c5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.23%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Jan 31, 2026 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: null_blk: fix kmemleak by releasing references to fault configfs items When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk driver sets up fault injection support by creating the timeout_inject, requeue_inject, and init_hctx_fault_inject configfs items as children of the top-level nullbX configfs group. However, w

  2. Jun 2, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: null_blk: fix kmemleak by releasing references to fault configfs items When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk driver sets up fault injection support by creating the timeout_inject, requeue_inject, and init_hctx_fault_inject configfs items as children of the top-level nullbX configfs group. However, w

Sources

  • CVE.orgVulnerability recordCVE-2026-23032

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-23032

    30-day exploitation probability 0.23%

    first.org
  • EUVDVulnerability recordEUVD-2026-5062

    In the Linux kernel, the following vulnerability has been resolved: null_blk: fix kmemleak by releasing references to fault configfs items When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk driver sets up fault injection support by creating the timeout_inject,

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 2, 2026