PT-2025-8996 · Linux+2 · Linux Kernel+2

Li Zhijian · Published 2025-01-06 · Updated 2025-07-16 · CVE-2025-21805

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 vulnerability in the Linux kernel has been resolved. The issue is related to the RDMA/rtrs component, where a missing deinit() call triggered a warning when repeatedly connecting and disconnecting the rnbd, resulting in a list add corruption. The problem was introduced by a commit that added a new element but never used it. The vulnerability can cause a warning to be triggered, and it may lead to undefined behavior.

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

Exploit

Weakness Enumeration

CWE-399

Related Identifiers

BDU:2025-12021

CVE-2025-21805

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

Astra Linux

Linux Kernel

Suse

References · 585

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21805.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-21805 · Vendor Advisory
• https://git.kernel.org/stable/c/81468c4058a62e84e475433b83b3edc613294f5e · Patch
• https://bdu.fstec.ru/vul/2025-12021 · Security Note
• https://git.kernel.org/stable/c/5a79cc9bc961fafe90787f86e8f53ba6fad8d63b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:02307-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-21805 · Security Note
• https://osv.dev/vulnerability/CVE-2025-21805 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02254-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-21805 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:02333-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21805 · Security Note
• https://ubuntu.com/security/CVE-2025-21805 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-21805 · Vendor Advisory