CVE-2026-90209

CVE CVE-2026-90209EUVD EUVD-2026-81802Published 2026-09-17T16:07:24.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo >.../vmur/level $ rmmod vmur =================================================== debugfs write debugfs_file_get() debug_unregister() mutex_lock(debug_mutex) debugfs_remove() wait for debugfs_file_put() debug_file_ops.write() debug_input() mutex_lock(debug_mutex) ==> DEADLOCK Fix this by splitting debug_unregister() into an s390dbf and debugfs part, and running only the s390dbf part with debug_mutex locked.

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 9372a82892c2caa6bccab9a4081166fa769699f8 <45bb341d1b73eb293e0dd43d9b72bbc8b615d0ba; patch: 6.6.157; fe5793e90d3f572a87ba67fe2f0e1679fdff14f8; patch: 6.18.52; 5.4.146 <5.5; 9372a82892c2caa6bccab9a4081166fa769699f8 <54e1259b75d6402a1d0cfb822b9bb2c507e53dab; 9372a82892c2caa6bccab9a4081166fa769699f8 <445c31ac638fd1af203d79bdf25fc0cb3149fbbc; 5.15; 9372a82892c2caa6bccab9a4081166fa769699f8 <5d83f3faa3fb7f23f298cfd40382611999de5d1d; 86f9980909f31ab205323eeeb290fe3cbb4952b4; 9372a82892c2caa6bccab9a4081166fa769699f8 <183f8f6d64bb0510070c856b9927618c53014a7b; patch: 5.15.221; patch: 0; 9372a82892c2caa6bccab9a4081166fa769699f8 <a214c3dacc779b2afcb0ac9c8001e45ee4ffb2ed; patch: 6.12.110; patch: 6.1.188; 5.10.65 <5.11; 5.14.4 <5.15; c68ba4a708fbd0efdc384cd29250bb292a45e559; patch: 7.3-rc1; e234f66168f0d50c0d28154fb983a14e85c3c526; 9372a82892c2caa6bccab9a4081166fa769699f8 <a08b70ed2d1ec907353a72f15163b8e34ff4b2f8; patch: 7.2.6; 5.13.17 <5.14

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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