CVE-2026-43132
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dm-verity Buffer Overflow in Linux Kernel

Publication date: 2026-05-06

Last updated on: 2026-05-08

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: dm-verity: correctly handle dm_bufio_client_create() failure If either of the calls to dm_bufio_client_create() in verity_fec_ctr() fails, then dm_bufio_client_destroy() is later called with an ERR_PTR() argument. That causes a crash. Fix this.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-08
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-14
NVD
CVE-2026-43132
EUVD
EUVD-2026-27692
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.2 (inc) to 6.6.128 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.75 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.16 (exc)
linux linux_kernel From 6.19 (inc) to 6.19.6 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.202 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.165 (exc)
linux linux_kernel From 4.5 (inc) to 5.10.252 (exc)
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Exploitability
CWE
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's dm-verity component. Specifically, if the function dm_bufio_client_create() fails during calls in verity_fec_ctr(), the subsequent call to dm_bufio_client_destroy() is made with an invalid error pointer (ERR_PTR()) argument. This improper handling causes the system to crash.

Impact Analysis

The impact of this vulnerability is that it can cause the Linux kernel to crash when the error handling in dm-verity is not properly managed. This could lead to system instability or denial of service due to unexpected crashes.

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