#VU124506 Exposure of sensitive information to an unauthorized actor in Linux kernel - CVE-2026-23335
Published: March 25, 2026
Vulnerability identifier: #VU124506
Vulnerability risk: Low
CVSSv4.0: 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
CVE-ID: CVE-2026-23335
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 security update from vendor's repository.
External links
- https://git.kernel.org/stable/c/14b47c07c69930254f549a17ee245c80a65b1609
- https://git.kernel.org/stable/c/1b1fac4c7a3ab7f52e9cfb91e5c91216646ca4d8
- https://git.kernel.org/stable/c/2fd37450d271d74b3847baed284f9cfdf198c6f8
- https://git.kernel.org/stable/c/74586c6da9ea222a61c98394f2fc0a604748438c
- https://git.kernel.org/stable/c/c9bd0007c4bdb7806bbd323287e50f9cf467c51a
- https://git.kernel.org/stable/c/cfe962216c164fe2b1c1fb6ac925a7413f5abc84