SB20260528248 - Out-of-bounds read in Linux kernel ipv4 netfilter

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Main Vulnerability Database SB20260528248

SB20260528248 - Out-of-bounds read in Linux kernel ipv4 netfilter

Published: May 28, 2026

Security Bulletin ID SB20260528248
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

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-2026-45844)

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

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause incorrect packet filtering decisions.

The vulnerability exists due to an out-of-bounds read in arp_packet_match() when parsing ARP payloads on IEEE1394 interfaces. A local user can send a specially crafted ARP packet to cause incorrect packet filtering decisions.

The issue occurs because IPv4-over-IEEE1394 ARP omits the target hardware address field, causing rule evaluation to use incorrect bytes for target address comparisons.


Remediation

Install update from vendor's website.

References