CVE-2026-72246
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: use correct direction to set up tunnel route The layer 2 encapsulation and layer 3 tunnel information in the xmit path is taken from the other tuple, because the tunnel information that is included in the tuple for hashtable lookups is also used to perform the egress encapsulation in the transmit path. This patch uses the correct direction when setting up the tunnel, the original proposed patch to address this fix uses the reversed direction. While at it, remove the redundant check to call dst_release() to drop the reference on the dst that was obtained from the forward path, which is not useful in the direct xmit path unless tunneling is performed.
Affected versions
Linux kernel versions
7.2-rc3
and later are affected. Fixed in
7.2-rc4
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-72246?
CVE-2026-72246 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 7.2-rc3 onward and has been patched in 7.2-rc4. CVE-2026-72246 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-2026-72246?
Yes. CVE-2026-72246 has been patched. Fixed versions include 7.2-rc4. If you are running Linux kernel 7.2-rc3 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72246 actively exploited?
No. CVE-2026-72246 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.