SB2026050254 - Out-of-bounds read in Linux kernel hwmon pmbus driver
Published: May 2, 2026
Security Bulletin ID
SB2026050254
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-43005)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in tps53679_identify_chip() when handling a zero-length block read from i2c_smbus_read_block_data(). A local user can trigger a zero-length block read to disclose sensitive information.
Remediation
Install update from vendor's website.