SB20260816425 - Double free in Linux kernel md driver
Published: August 16, 2026
Security Bulletin ID
SB20260816425
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) Double free (CVE-ID: CVE-2026-72102)
CWE-ID: CWE-415 - Double Free
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 a double free in dm_early_create in drivers/md/dm-ioctl.c when resuming a device-mapper device after swapping in a new table. A local user can trigger a dm_resume failure to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/259ce9e3fc3a3f8c4e393a2072b8f34302eb4d5a
- https://git.kernel.org/stable/c/366665416f20527ff7cad548a32d1ddf23195740
- https://git.kernel.org/stable/c/3ba377a47a093cc19647ca7f102acd33a211d472
- https://git.kernel.org/stable/c/5f6500d44a912d4aed664600966706d76b81d9af
- https://git.kernel.org/stable/c/72c3283a2abd60ecef295e02270f22ef1dfccd25
- https://git.kernel.org/stable/c/7d8ed7cb844df21e4d93af11250fb3a5cb861147
- https://git.kernel.org/stable/c/92e3c93d60be1f2425738cd66dbadac7d6bc0cd1
- https://git.kernel.org/stable/c/d6066145347e14db84c35b445e309f095d0d8125