SB20260827137 - Out-of-bounds read in Linux kernel ethernet ti driver

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Main Vulnerability Database SB20260827137

SB20260827137 - Out-of-bounds read in Linux kernel ethernet ti driver

Published: August 27, 2026

Security Bulletin ID SB20260827137
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-74737)

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

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an out-of-bounds memory access in the am65-cpsw-nuss packet reception path when processing RX DMA descriptor metadata containing the source tag. A remote attacker can send a specially crafted packet to cause a denial of service.

The issue occurs because the driver uses the full 16-bit source tag as the port identifier even though only the lower 8 bits represent the MAC port ID, while the upper 8 bits are hardware-reserved and may contain arbitrary values.


Remediation

Install update from vendor's website.

References