SB20260507213 - Improper Check or Handling of Exceptional Conditions in Linux kernel md driver
Published: May 7, 2026
Security Bulletin ID
SB20260507213
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-43132)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of error pointers in verity_fec_ctr() when creating dm-bufio clients. A local user can trigger a failure in dm_bufio_client_create() to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/031f2adc1499b112a39ac316bbab3c80bba16cf2
- https://git.kernel.org/stable/c/119f4f04186fa4f33ee6bd39af145cdaff1ff17f
- https://git.kernel.org/stable/c/451cc650e40e8c3222d37877a9e4be0fcaacb9c8
- https://git.kernel.org/stable/c/5c2217ddb3b7e7ac25f4ebe9061258fc8f1c9167
- https://git.kernel.org/stable/c/6283e49af87a9c121bb01e5a64a7fe5706c210bc
- https://git.kernel.org/stable/c/9b8dc1d327e2928f3da59ced0595d850d31c0936
- https://git.kernel.org/stable/c/b154a868a3856fb5216c4f82981d8a503832e095
- https://git.kernel.org/stable/c/d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef