NuytsTech Security

CVE-2024-49995

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In the Linux kernel, the following vulnerability has been resolved:

tipc: guard against string buffer overrun

Smatch reports that copying media_name and if_name to name_parts may
overwrite the destination.

…/bearer.c:166 bearer_name_validate() error: strcpy() ‘media_name’ too large for ‘name_parts->media_name’ (32 vs 16)
…/bearer.c:167 bearer_name_validate() error: strcpy() ‘if_name’ too large for ‘name_parts->if_name’ (1010102 vs 16)

This does seem to be the case so guard against this possibility by using
strscpy() and failing if truncation occurs.

Introduced by commit b97bf3fd8f6a (“[TIPC] Initial merge”)

Compile tested only.

More information : https://git.kernel.org/stable/c/12d26aa7fd3cbdbc5149b6e516563478d575026e

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