| 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. ]
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