SB20260816438 - NULL pointer dereference in Linux kernel md driver
Published: August 16, 2026
Security Bulletin ID
SB20260816438
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) NULL pointer dereference (CVE-ID: CVE-2026-72097)
CWE-ID: CWE-476 - NULL Pointer Dereference
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 attacker to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in dm_verity_loadpin_is_bdev_trusted when checking whether a block device is trusted. A local attacker can trigger the vulnerable code path to cause a denial of service.
The issue occurs if the device has no table.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1f04b390add2e14c5b36829a0a1529c4eb65a2e1
- https://git.kernel.org/stable/c/32f8231c81bd45ab92d49b646a154551f7d54f4f
- https://git.kernel.org/stable/c/7d4f1d307ac0f4f55cebeb192a90a235aa060ed1
- https://git.kernel.org/stable/c/81f41d989a32458ff3512f6b05458eaf8926579c
- https://git.kernel.org/stable/c/e72b793ae440f6900fb17a4b8518c707b5cd3e17
- https://git.kernel.org/stable/c/f15eaa3801f2f9207dff156f1ab3e7436ce52bb1