SB20261015121 - Out-of-bounds write in Linux kernel wireless rsi driver

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Main Vulnerability Database SB20261015121

SB20261015121 - Out-of-bounds write in Linux kernel wireless rsi driver

Published: October 15, 2026

Security Bulletin ID SB20261015121
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-98407)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to corrupt unrelated kernel heap objects.

The vulnerability exists due to incorrect pointer arithmetic resulting in an out-of-bounds write in the rsi_hal_load_key() function when removing a key with a null data pointer. A local user can trigger a key-removal operation to corrupt unrelated kernel heap objects.

The write occurs on every DISABLE_KEY callback, including during disconnects, roaming, and interface teardown. It writes 144 zero bytes approximately 2.4 KB beyond the end of a 160-byte heap buffer.


Remediation

Install update from vendor's website.

References