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.
Affected versions
Linux kernel versions
5.13
and later are affected. Fixed in
5.15.202,
6.1.165,
6.6.128,
6.12.75,
6.18.14,
6.19.4,
7.0
and their respective stable series.
References
The following references provide additional information about CVE-2026-45847 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572
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PatchKernel patch commithttps://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6
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PatchKernel patch commithttps://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44
Frequently asked questions
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What is CVE-2026-45847?
CVE-2026-45847 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.202, 6.1.165, 6.6.128 and others. CVE-2026-45847 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-45847?
Yes — CVE-2026-45847 has been patched. Fixed versions include 5.15.202, 6.1.165, 6.6.128 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-45847 actively exploited?
No — CVE-2026-45847 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.