CVE-2026-63982

CVE CVE-2026-63982EUVD EUVD-2026-45755Published 2026-07-19T14:56:05.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop When mirred redirects to ingress (from either ingress or egress) the loop state from sched_mirred_dev array dev is lost because of 1) the packet deferral into the backlog and 2) the fact the sched_mirred_dev array is cleared. In such cases, if there was a loop we won't discover it. Here's a simple test to reproduce: ip a add dev port0 10.10.10.11/24 tc qdisc add dev port0 clsact tc filter add dev port0 egress protocol ip \ prio 10 matchall action mirred ingress redirect dev port1 tc qdisc add dev port1 clsact tc filter add dev port1 ingress protocol ip \ prio 10 matchall action mirred egress redirect dev port0 ping -c 1 -W0.01 10.10.10.10

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 906736728cea480a85803c67fafb1b0e78491922 <66f4607fe788fc7d81bce0e2f7b3726ed2f71284; patch: 7.0.12; 6.19; fe946a751d9b52b7c45ca34899723b314b79b249 <45ac526a0d5733c3695946bd84ec57f24d8f5e66; fe946a751d9b52b7c45ca34899723b314b79b249 <db875221ab08d213a83bf30196ae8b64d55a3403; patch: 0; patch: 7.1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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