SB20260928269 - Incorrect calculation in Linux kernel include asm
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928269
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) Incorrect calculation (CVE-ID: CVE-2026-97945)
CWE-ID: CWE-682 - Incorrect Calculation
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause data loss.
The vulnerability exists due to incorrect preservation of the dirty bit in pmd_modify() when changing memory protections on PMD-mapped transparent huge pages. A local user can use MADV_FREE and change memory protections under memory pressure to cause data loss.
NUMA hinting can also trigger the issue.
Remediation
Install update from vendor's website.