SB20260816428 - Integer overflow in Linux kernel md driver
Published: August 16, 2026
Security Bulletin ID
SB20260816428
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) Integer overflow (CVE-ID: CVE-2026-72105)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer overflow in create_log_context in drivers/md/dm-log.c when calculating bitmap memory size for large region_count values on 32-bit systems. A local user can trigger the vulnerable code path to cause a denial of service.
Only 32-bit systems are affected.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1c3412b584e1fb6c665ff33ba7259253bc0082cb
- https://git.kernel.org/stable/c/4b0de5a3ac1fd42acb0dc1f80ac5747e3287d723
- https://git.kernel.org/stable/c/567602fa72d57169365cbc589e0b8c3be900636d
- https://git.kernel.org/stable/c/79feb87ab2396d49b9b65e4bb815d33cc71cba47
- https://git.kernel.org/stable/c/9743132a41f4d9d0e54c5f2adcb821b04796bab1
- https://git.kernel.org/stable/c/cdc4ddf9db2cb79f4ab86b1a509b7ac21b0b6cf5
- https://git.kernel.org/stable/c/d05e0edfecf5260e6dddd28b2f0cce02bfc6ed7a
- https://git.kernel.org/stable/c/e0b0163a65758ec3a2361ae1cea407898c27f21e