PT-2026-27700 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-05-26 · CVE-2026-23335

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A kernel stack leak exists in the irdma create user ah() function within the RDMA/irdma component. The rsvd[4] member of the irdma create ah resp structure leaks 4 bytes of stack memory because the reserved members are not zeroed before use. Specifically, only the ah id field is assigned a value before ib respond udata() is called, leaving the rsvd[4] field uninitialized and exposing stack data. The structure irdma create ah resp contains the ah id variable at offset 0 and the rsvd variable at offset 4.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-23335

ECHO-8ACB-9F92-2D50

OPENSUSE-SU-2026:20572-1

SUSE-SU-2026:21114-1

SUSE-SU-2026:21123-1

SUSE-SU-2026:21237-1

SUSE-SU-2026:21255-1

SUSE-SU-2026:21352-1

SUSE-SU-2026:21361-1

SUSE-SU-2026:2217-1

SUSE-SU-2026:2238-1

Affected Products

Linux Kernel

References · 210

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23335.json · Exploit
• https://git.kernel.org/stable/c/1f70df004fdd944653013ccc2e1dfd472a693b46 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23335 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-23335 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:21255-1 · Vendor Advisory
• https://git.kernel.org/stable/c/c9bd0007c4bdb7806bbd323287e50f9cf467c51a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23335 · Security Note
• https://git.kernel.org/stable/c/2fd37450d271d74b3847baed284f9cfdf198c6f8 · Patch
• https://cve.org/CVERecord?id=CVE-2026-23335 · Security Note
• https://git.kernel.org/stable/c/14b47c07c69930254f549a17ee245c80a65b1609 · Patch
• https://git.kernel.org/stable/c/cfe962216c164fe2b1c1fb6ac925a7413f5abc84 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2026:20572-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23335 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:21114-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23335 · Vendor Advisory