CVE-2024-40966 Affecting dlm-kmp-default package, versions <6.4.0-150600.23.17.1
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Test your applications- Snyk ID SNYK-SLES156-DLMKMPDEFAULT-7649591
- published 8 Aug 2024
- disclosed 7 Aug 2024
Introduced: 7 Aug 2024
CVE-2024-40966 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 dlm-kmp-default to version 6.4.0-150600.23.17.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dlm-kmp-default package and not the dlm-kmp-default package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
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
- https://www.suse.com/security/cve/CVE-2024-40966.html
- https://bugzilla.suse.com/1227886
- https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409
- https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937
- https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86
- https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b