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| CodeSonar® 9.2p0 | CONFIDENTIAL | CodeSecure Inc |
An allocation size is based on a tainted value. It may therefore be unreasonably small (which may lead to buffer overflows) or unreasonably large (which may lead to resource exhaustion).
| Class Name | Tainted Allocation Size | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | security | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mnemonic | IO.TAINT.SIZE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Categories |
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| Availability | Available for C and C++. |
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| Enabling | Checks for this warning class are
disabled by default. To enable them, add the following WARNING_FILTER
rule to the project configuration file.
WARNING_FILTER += allow class="Tainted Allocation Size" |
Japanese (ja)
#include <stdio.h>
#include <stdlib.h>
int read_myinfo(FILE *f){
char allocsize[16];
char *infobuf;
int bufsize;
if (fgets(allocsize, 16, f) == NULL ) {return -1;}
bufsize = atoi(allocsize);
if (bufsize <= 0 || bufsize > 1000000) {return -1;}
infobuf = malloc(bufsize); /* 'Tainted Allocation Size' warning issued here */
if (!infobuf){return -1;}
/* ...remainder of function */
free(infobuf);
return 1;
}
Tainted Allocation Size warnings can be triggered by any function treated as an allocator by CodeSonar:
The following configuration file parameters affect checks for this warning class.
To report problems with this documentation, please visit https://support.codesecure.com/.