0.0
NA
CVE-2022-49975
Linux Kernel BPF Packet Redirect Invalid Length Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.

INFO

Published Date :

June 18, 2025, 11:15 a.m.

Last Modified :

June 18, 2025, 1:46 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2022-49975 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Follow the instructions below to mitigate the CVE-2022-49975 vulnerability.
There is no known solution at this time.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-49975.

URL Resource
https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462
https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23
https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0
https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554
https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-49975 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-49975 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-49975 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-49975 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jun. 18, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.
    Added Reference https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462
    Added Reference https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23
    Added Reference https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0
    Added Reference https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554
    Added Reference https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.