SB2026072784 - Out-of-bounds write in Linux kernel firewire

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Main Vulnerability Database SB2026072784

SB2026072784 - Out-of-bounds write in Linux kernel firewire

Published: July 27, 2026

Security Bulletin ID SB2026072784
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 write (CVE-ID: CVE-2026-64483)

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

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


The vulnerability allows an attacker with physical access to cause a denial of service or execute arbitrary code.

The vulnerability exists due to an out-of-bounds read and out-of-bounds write in isight_packet() when processing crafted FireWire isochronous packets from a device on the bus during normal capture. An attacker with physical access can provide a malicious device that reports an oversized sample count to cause a denial of service or execute arbitrary code.

Exploitation requires a malicious or faulty Apple iSight device connected on the FireWire bus.


Remediation

Install update from vendor's website.

References