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Vulnerability Change Records for CVE-2023-52464

Change History

New CVE Received by NIST 2/23/2024 10:15:08 AM

Action Type Old Value New Value
Added Description

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

EDAC/thunderx: Fix possible out-of-bounds string access

Enabling -Wstringop-overflow globally exposes a warning for a common bug
in the usage of strncat():

  drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr':
  drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=]
   1136 |                 strncat(msg, other, OCX_MESSAGE_SIZE);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1145 |                                 strncat(msg, other, OCX_MESSAGE_SIZE);
   1150 |                                 strncat(msg, other, OCX_MESSAGE_SIZE);


Apparently the author of this driver expected strncat() to behave the
way that strlcat() does, which uses the size of the destination buffer
as its third argument rather than the length of the source buffer. The
result is that there is no check on the size of the allocated buffer.

Change it to strlcat().

  [ bp: Trim compiler output, fixup commit message. ]
Added Reference

Linux https://git.kernel.org/stable/c/426fae93c01dffa379225eb2bd4d3cdc42c6eec5 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/475c58e1a471e9b873e3e39958c64a2d278275c8 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/5da3b6e7196f0b4f3728e4e25eb20233a9ddfaf6 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/6aa7865ba7ff7f0ede0035180fb3b9400ceb405a [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/700cf4bead80fac994dcc43ae1ca5d86d8959b21 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/71c17ee02538802ceafc830f0736aa35b564e601 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/9dbac9fdae6e3b411fc4c3fca3bf48f70609c398 [No types assigned]
Added Reference

Linux https://git.kernel.org/stable/c/e1c86511241588efffaa49556196f09a498d5057 [No types assigned]