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

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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
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 security vulnerability.


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

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