CVE-2026-45847
net: remove WARN_ON_ONCE when accessing forward path array
Description
In the Linux kernel, the following vulnerability has been resolved: net: remove WARN_ON_ONCE when accessing forward path array Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path. Remove it.
INFO
Published Date :
May 27, 2026, 2:16 p.m.
Last Modified :
May 27, 2026, 2:48 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to a version where this WARN_ON_ONCE is removed.
- Apply the patch removing the WARN_ON_ONCE check.
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-2026-45847.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45847 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-2026-45847
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).
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The following list is the news that have been mention
CVE-2026-45847 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45847 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: remove WARN_ON_ONCE when accessing forward path array Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path. Remove it. Added Reference https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572 Added Reference https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6 Added Reference https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44 Added Reference https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6 Added Reference https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08 Added Reference https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660 Added Reference https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3