jory/upx
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

8 bit relocation overflow detection added to ElfLinker

Browse Source
This commit is contained in:
László Molnár
2006-07-17 16:58:24 +02:00
parent e881e008b8
commit 4c87e11aeb
1 changed files with 18 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/linker.cpp
+18
View File
@@ -787,7 +787,16 @@ void ElfLinkerX86::relocate1(Relocation *rel, upx_byte *location,
} }
if (strcmp(type, "8") == 0) if (strcmp(type, "8") == 0)
{
int displ = (char) *location + (int) value;
if (displ < -127 || displ > 128)
{
printf("target out of range (%d) in reloc %s:%x\n",
displ, rel->section->name, rel->offset);
abort();
}
*location += value; *location += value;
}
else if (strcmp(type, "16") == 0) else if (strcmp(type, "16") == 0)
set_le16(location, get_le16(location) + value); set_le16(location, get_le16(location) + value);
else if (strcmp(type, "32") == 0) else if (strcmp(type, "32") == 0)
@@ -810,7 +819,16 @@ void ElfLinkerAMD64::relocate1(Relocation *rel, upx_byte *location,
} }
if (strcmp(type, "8") == 0) if (strcmp(type, "8") == 0)
{
int displ = (char) *location + (int) value;
if (displ < -127 || displ > 128)
{
printf("target out of range (%d) in reloc %s:%x\n",
displ, rel->section->name, rel->offset);
abort();
}
*location += value; *location += value;
}
else if (strcmp(type, "16") == 0) else if (strcmp(type, "16") == 0)
set_le16(location, get_le16(location) + value); set_le16(location, get_le16(location) + value);
else if (strcmp(type, "32") == 0) else if (strcmp(type, "32") == 0)