SB20260912227 - Integer overflow in Linux kernel nvdimm driver
Published: September 12, 2026 Updated: October 1, 2026
Security Bulletin ID
SB20260912227
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2026-89559)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform an out-of-bounds write.
The vulnerability exists due to an integer overflow in __nd_label_validate() in the libnvdimm label handler when processing a crafted nslot namespace index value. A local user can supply crafted configuration data through ND_CMD_SET_CONFIG_DATA to perform an out-of-bounds write.
The nslot field may also originate from DIMM label storage.
Remediation
Install update from vendor's website.