SB2026072826 - Out-of-bounds read in Linux kernel qualcomm rmnet driver

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Main Vulnerability Database SB2026072826

SB2026072826 - Out-of-bounds read in Linux kernel qualcomm rmnet driver

Published: July 28, 2026

Security Bulletin ID SB2026072826
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

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-2026-64550)

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

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in rmnet_map_ingress_handler() and __rmnet_map_ingress_handler() when processing a crafted short MAP frame on the no-aggregation ingress path. A local user can send a specially crafted frame to disclose sensitive information.

The issue occurs when ingress deaggregation is disabled, causing packet parsing to use the on-wire packet length without verifying skb->len first.


Remediation

Install update from vendor's website.

References