PT-2025-14282 · Linux+4 · Linux Kernel+4

Published 2025-02-04 · Updated 2026-01-20 · CVE-2025-21901

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 The issue is related to the RDMA/bnxt re component of the Linux kernel. There is a possibility that ulp irq stop and ulp irq start callbacks will be called when the device is in a detached state. This can cause a crash due to a NULL pointer dereference as the rdev is already freed.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2025-5786

BDU:2025-04453

CVE-2025-21901

SUSE-SU-2025:02254-1

SUSE-SU-2025:02307-1

SUSE-SU-2025:02333-1

SUSE-SU-2025_02254-1

SUSE-SU-2025_02307-1

SUSE-SU-2025_02333-1

Affected Products

Alt Linux

Astra Linux

Linux Kernel

Red Os

Suse

References · 589

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21901.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2025-21901 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21901 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-21901 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-21901 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02307-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-21901 · Vendor Advisory
• http://repo.red-soft.ru/redos/8.0/x86_64/updates · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21901 · Vendor Advisory
• https://git.kernel.org/stable/c/aed1bc673907e3df372b317c10ff2f3582f8bf1a · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:02254-1 · Vendor Advisory
• https://git.kernel.org/stable/c/f0df225d12fcb049429fb5bf5122afe143c2dd15 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:02333-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-21901 · Security Note