SB20260924139 - Improper input validation in Linux kernel ata driver
Published: September 24, 2026
Security Bulletin ID
SB20260924139
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-97441)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 4.1 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to cause a denial of service.
The vulnerability exists due to improper validation of the mapped BAR size in the AHCI driver when probing an AHCI controller whose HOST_CAP register claims more ports than fit within the mapped BAR region. An attacker with physical access can trigger access to port registers beyond the BAR boundary to cause a denial of service.
Remediation
Install update from vendor's website.