CVE-2026-90135
net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
4d92b95ff2f95f13df9bad0b5a25a9f60e72758d < 2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d < 5fe03b5257095e2beef0bc79e1f068fbd09a24c7 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d < 63ab05e8f9654aa100d366c0236399fda6ffaab1 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d < 0b1c2af8a22c35cb099c735c2f63ea3ba757557d
Linux / Linux
5.17
References
git.kernel.org: https://git.kernel.org/stable/c/2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c git.kernel.org: https://git.kernel.org/stable/c/5fe03b5257095e2beef0bc79e1f068fbd09a24c7 git.kernel.org: https://git.kernel.org/stable/c/63ab05e8f9654aa100d366c0236399fda6ffaab1 git.kernel.org: https://git.kernel.org/stable/c/0b1c2af8a22c35cb099c735c2f63ea3ba757557d