PT-2025-25901 · Linux+2 · Linux Kernel+2

Published 2022-07-19 · Updated 2026-01-28 · CVE-2022-49975

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A vulnerability has been identified in the Linux kernel where the bpf prog test run skb() function runs a bpf program that redirects empty skbs, causing the fq codel drop() function to attempt to drop a flow without any skbs. The root cause of this issue is the lack of validation of the packet length modified by bpf programs before forwarding it. Syzbot discovered this issue.

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

Exploit

Weakness Enumeration

CWE-1284

Related Identifiers

BDU:2026-01516

CVE-2022-49975

SUSE-SU-2025:03204-1

SUSE-SU-2025:03614-1

SUSE-SU-2025_03204-1

SUSE-SU-2026:0316-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 843

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49975.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-49975 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49975 · Vendor Advisory
• https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49975 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49975 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0316-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01516 · Security Note
• https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462 · Patch
• https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23 · Patch
• https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03204-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49975 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03614-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0 · Patch