CVE-2026-90158
m68k: nfcon: Do not call console_is_registered() in nfcon_device()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: m68k: nfcon: Do not call console_is_registered() in nfcon_device() Since 7c2af0f634f1 ("tty: tty_io: use console_list_lock for list synchronization") show_cons_active() calls the .device() method under the console_list_lock, but console_is_registered() tries to acquire console_list_lock as well, causing a deadlock. It should not be necessary to check console_is_registered() here since the function should not be called in the fist place when the console is not registered.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
7c2af0f634f1bc761ca827310dc7e8e586af502f < 7d3f15a664d115584fc177b5f2cfbdb3e5a50d60 7c2af0f634f1bc761ca827310dc7e8e586af502f < e5e11274b5512e24a346ed83f8dd85e3389d2f4b 7c2af0f634f1bc761ca827310dc7e8e586af502f < be98f92fc244688a6bdecbc834cf2cd243056d9d 7c2af0f634f1bc761ca827310dc7e8e586af502f < d73441232f1f067eb659e94447b1353c16609711 7c2af0f634f1bc761ca827310dc7e8e586af502f < 2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5
Linux / Linux
6.2
References
git.kernel.org: https://git.kernel.org/stable/c/7d3f15a664d115584fc177b5f2cfbdb3e5a50d60 git.kernel.org: https://git.kernel.org/stable/c/e5e11274b5512e24a346ed83f8dd85e3389d2f4b git.kernel.org: https://git.kernel.org/stable/c/be98f92fc244688a6bdecbc834cf2cd243056d9d git.kernel.org: https://git.kernel.org/stable/c/d73441232f1f067eb659e94447b1353c16609711 git.kernel.org: https://git.kernel.org/stable/c/2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5