SB20261022193 - Out-of-bounds read in Linux kernel net usb driver

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Main Vulnerability Database SB20261022193

SB20261022193 - Out-of-bounds read in Linux kernel net usb driver

Published: October 22, 2026

Security Bulletin ID SB20261022193
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-98612)

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

CVSSv4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker with physical access to system to potentially cause a denial of service or disclose kernel memory.

The vulnerability exists due to out-of-bounds reads and acceptance of undersized packets in the Linux kernel's catc_rx_done() function when processing USB receive transfers. An attacker with physical access to system can supply malformed packet lengths or truncated transfers to trigger reads beyond the receive buffer or from uninitialized socket-buffer tailroom, potentially causing a kernel crash or memory disclosure.


Remediation

Install update from vendor's website.

References