SB20261022449 - Out-of-bounds write in Linux kernel silabs wfx driver

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Main Vulnerability Database SB20261022449

SB20261022449 - Out-of-bounds write in Linux kernel silabs wfx driver

Published: October 22, 2026

Security Bulletin ID SB20261022449
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 write (CVE-ID: CVE-2026-98830)

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

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to cause memory corruption and potentially a denial of service in the Linux kernel.

The vulnerability exists due to an out-of-bounds write and an out-of-bounds read in wfx_hif_read_mib() in the wfx wireless driver when processing firmware responses to MIB read requests. A local privileged user can supply a firmware response with a length field exceeding the caller-provided val_len to overwrite the caller's buffer and read beyond the reply allocation, potentially causing a kernel crash.


Remediation

Install update from vendor's website.

References