SB20261023150 - Out-of-bounds read in Linux kernel regulator driver

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Main Vulnerability Database SB20261023150

SB20261023150 - Out-of-bounds read in Linux kernel regulator driver

Published: October 23, 2026

Security Bulletin ID SB20261023150
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-99020)

CWE-ID: CWE-125 - Out-of-bounds read

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 user to potentially cause a denial of service through out-of-bounds kernel memory reads.

The vulnerability exists due to an out-of-bounds read in the Linux kernel tps6594-regulator driver when processing voltage selectors above 0x45 for TPS65224 and TPS652G1 BUCK2-4 regulators. A local user can potentially trigger these lookups to cause reads beyond tps65224_bucks_2_3_4_ranges[], because the descriptors specify four linear ranges although the array contains only two, potentially disrupting kernel operation.

The invalid lookups also occur during normal regulator registration, when the regulator core checks voltage constraints against every selector.


Remediation

Install update from vendor's website.

References