CVE-2026-90135

CVE CVE-2026-90135EUVD EUVD-2026-81728Published 2026-09-17T16:06:34.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs() sashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/* causes use-afer-free crash when either alloc_percpu() or dev_addr_init() in alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 ("net: add net device refcount tracker infrastructure") added ref_tracker_dir_exit() to only free_netdev() path.

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 patch: 7.3-rc1; 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d <63ab05e8f9654aa100d366c0236399fda6ffaab1; patch: 6.18.52; 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d <5fe03b5257095e2beef0bc79e1f068fbd09a24c7; 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d <0b1c2af8a22c35cb099c735c2f63ea3ba757557d; 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d <2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c; 5.17; patch: 0; patch: 7.2.6; patch: 6.12.110

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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