CVE-2026-100071
CVE CVE-2026-100071EUVD EUVD-2026-87068Published 2026-09-25T13:06:44.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net: hsr: free learned nodes on device setup failure hsr_dev_finalize() can fail after a lower-device RX handler has already been registered (slave A is added before the failable slave B and interlink adds). RX handlers run in softirq regardless of the master's state, so frames received in that window can learn dynamic nodes into node_db, and the error unwind never releases them. Free both owned dynamic databases in the unwind, mirroring hsr_dellink(). proxy_node_db is provably empty on every current error exit (only interlink RX feeds it, and the interlink add is the last failable step) and is freed for symmetry. The order is safe: hsr_del_port() unregisters each RX handler with synchronize_net() before hsr_del_nodes() runs, which removes remaining entries with list_del_rcu() and defers their release with call_rcu() for readers already under RCU.
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 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <e691eee886871b933d772ffc76d66c80b4c0a25e; patch: 6.18.52; 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <49b01f2939abc676a6f9a118f07a10110ee5f683; patch: 6.1.188; patch: 6.6.157; patch: 0; patch: 7.2.6; 3.17; patch: 6.12.110; 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <65702339b3e9fd792f65d4b740928798194d86ce; 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <f7289e3492f2694dccd3d79287e0e31879b58650; 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <7f16289b91eb316f170a6bd22d32e6c632f6a5b6; patch: 7.3-rc1; 81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8 <0a340ffd96943a49a78e367efac9517ca767d99b
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
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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