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VulnerabilityPublished Updated

CVE-2026-43132: Linux kernel · dm-verity: correctly handle dm_bufio_client_create() failure

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef, b154a868a3856fb5216c4f82981d8a503832e095, 6283e49af87a9c121bb01e5a64a7fe5706c210bc +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef
Fixed in
  • d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < b154a868a3856fb5216c4f82981d8a503832e095
Fixed in
  • b154a868a3856fb5216c4f82981d8a503832e095
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < 6283e49af87a9c121bb01e5a64a7fe5706c210bc
Fixed in
  • 6283e49af87a9c121bb01e5a64a7fe5706c210bc
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < 451cc650e40e8c3222d37877a9e4be0fcaacb9c8
Fixed in
  • 451cc650e40e8c3222d37877a9e4be0fcaacb9c8
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < 119f4f04186fa4f33ee6bd39af145cdaff1ff17f
Fixed in
  • 119f4f04186fa4f33ee6bd39af145cdaff1ff17f
LinuxLinuxAffected
  • ≥ a739ff3f543afbb4a041c16cd0182c8e8d366e70, < 031f2adc1499b112a39ac316bbab3c80bba16cf2
Fixed in
  • 031f2adc1499b112a39ac316bbab3c80bba16cf2

AI-suggested

The vulnerability has been fixed in specific Linux kernel commits. Users should apply the patches or upgrade to a kernel version that includes these fixes to prevent crashes caused by this issue.

Description

A vulnerability in the Linux kernel's dm-verity component causes a crash when dm_bufio_client_create() fails and dm_bufio_client_destroy() is called with an invalid argument. This issue has been fixed in certain commits.

References

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