CVE-2026-45847
Published May 27, 2026
Modified May 27, 2026
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.
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EPSS — Exploit Prediction
0.0021
Probability of exploitation
0.11%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572
https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6
https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44
https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6
https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08
https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660
https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3
Frequently Asked Questions
What is CVE-2026-45847? +
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.
How do I check if I'm vulnerable to CVE-2026-45847? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.