CVE-2026-98031

CVE CVE-2026-98031EUVD EUVD-2026-86684Published 2026-09-25T10:23:47.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: nexthop: Initialize extack in remove_nh_grp_entry() remove_nh_grp_entry() prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a message when returning an error. Neither netdevsim nor mlxsw do so when an allocation fails, resulting in the dereference of an uninitialized stack pointer. Fix by zero-initializing extack, as was done in commit 6347c5314cee ("nexthop: initialize extack in nh_res_bucket_migrate()").

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 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 <030c878eaedf0449e2b5401a0a0146d0afcc645e; patch: 7.2.7; patch: 6.12.111; 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 <d80677ad7aa5bebfccfd58caa4852b65abe70561; 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 <d643cea4248668dc493c513aa7cbc6505eb1a4a9; 5.11; patch: 7.3-rc3; 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 <5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b; patch: 6.18.53; patch: 0

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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