CVE-2024-40966 (GCVE-0-2024-40966)
Vulnerability from cvelistv5
Published
2024-07-12 12:32
Modified
2026-05-11 20:23
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: add the option to have a tty reject a new ldisc ... and use it to limit the virtual terminals to just N_TTY. They are kind of special, and in particular, the "con_write()" routine violates the "writes cannot sleep" rule that some ldiscs rely on. This avoids the BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659 when N_GSM has been attached to a virtual console, and gsmld_write() calls con_write() while holding a spinlock, and con_write() then tries to get the console lock.
References
Impacted products
Vendor Product Version
Linux Linux Version: e1eaea46bb4020b38a141b84f88565d4603f8dd0
Version: e1eaea46bb4020b38a141b84f88565d4603f8dd0
Version: e1eaea46bb4020b38a141b84f88565d4603f8dd0
Version: e1eaea46bb4020b38a141b84f88565d4603f8dd0
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