PT-2025-8886 · Linux+1 · Linux Kernel+1

Marc Kleine-Budde + 1 · Published 2025-01-27 · Updated 2025-03-01 · CVE-2025-21774

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 concerned the rkcanfd handle rx fifo overflow int() function, where a NULL pointer check was fixed to bail out if an skb cannot be allocated.

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

BDU:2025-12200

CVE-2025-21774

Affected Products

Astra Linux

Linux Kernel

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21774.json · Exploit
• https://ubuntu.com/security/CVE-2025-21774 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21774 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-21774 · Vendor Advisory
• https://git.kernel.org/stable/c/946750e7865df2e70045071051abf768785dd570 · Patch
• https://security-tracker.debian.org/tracker/CVE-2025-21774 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://git.kernel.org/stable/c/118fb35681bd2c0d2afa22f7be0ef94bb4d06849 · Patch
• https://git.kernel.org/stable/c/f7f0adfe64de08803990dc4cbecd2849c04e314a · Patch
• https://osv.dev/vulnerability/BELL-CVE-2025-21774 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21774 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-21774 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20480.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-21774 · Security Note
• https://bdu.fstec.ru/vul/2025-12200 · Security Note