Ports/perfect_dark
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port: do not read past the end of EEPROM when scanning for headers

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fgsfds committed 2025-05-31 13:24:13 +02:00
1 parent a040b29d40
commit 9bffab7e3e
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src/game/pak.c
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@@ -859,6 +859,11 @@ PakErr2 pakReadHeaderAtOffset(s8 device, u32 offset, struct pakfileheader *heade
return PAK_ERR2_BADOFFSET; return PAK_ERR2_BADOFFSET;
} }
if (offset > g_Paks[device].pdnumbytes - sizeof(sp38)) {
// not enough bytes left for a header
return PAK_ERR2_BADOFFSET;
}
if (!pakRetrieveHeaderFromCache(device, blocknum, headerptr)) { if (!pakRetrieveHeaderFromCache(device, blocknum, headerptr)) {
result = pakReadWriteBlock(device, PFS(device), g_Paks[device].pdnoteindex, 0, offset, sizeof(sp38), sp38); result = pakReadWriteBlock(device, PFS(device), g_Paks[device].pdnoteindex, 0, offset, sizeof(sp38), sp38);