Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 3c6332f3bb1578b5b10ac2561247b1d6272ae937; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 287b569a5b914903ba7c438a3c0dbc3410ebb409; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 5920ac19964f9e20181f63b410d9200ddbf8dc86; affected e1eaea46bb4020b38a141b84f88565d4603f8dd0 before 6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b |
| Linux / Linux | affected 2.6.35; unaffected 0 before 2.6.35; unaffected 6.1.96 through 6.1.*; unaffected 6.6.36 through 6.6.*; unaffected 6.9.7 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937
- https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409
- https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86
- https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937
- https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409
- https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86
- https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
No English description supplied.
No references supplied.