CVE-2026-45847 Details
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.
A vulnerability in the Linux kernel's handling of network device forwarding paths has been addressed. The issue arose from a WARN_ON_ONCE condition in the net/core/dev.c file, which could be triggered if userspace created a sufficiently long forwarding path. This was made more likely by recent additions to support IPIP tunnels. The WARN_ON_ONCE condition has been removed to prevent potential issues.
Users can update to the latest version of the Linux kernel where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572 | kernel.org | Patch |
| https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.13, < 5.15.202 >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.14 >= 6.19, < 6.19.4 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |