SB20260325115 - Exposure of sensitive information to an unauthorized actor in Linux kernel hw irdma driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260325115

SB20260325115 - Exposure of sensitive information to an unauthorized actor in Linux kernel hw irdma driver

Published: March 25, 2026

Security Bulletin ID SB20260325115
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) Exposure of sensitive information to an unauthorized actor (CVE-ID: CVE-2026-23335)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 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/E:U/U:Clear


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper initialization of stack memory in the RDMA/irdma subsystem when handling user-space requests. A local user can trigger the creation of an address handle via the irdma_create_user_ah() function to disclose up to 4 bytes of kernel stack memory.

The uninitialized reserved field in the irdma_create_ah_resp structure is copied to user space without being zeroed, leading to a kernel stack information leak.


Remediation

Install update from vendor's website.

References