Detect LC_SEGMENT beyond end-of-file in PackMachBase<T>::find_SEGMENT_gap.

2010-04-28 20:05:23 -07:00 · 2010-04-28 20:05:23 -07:00 · 99a208110b
commit 99a208110b
parent e56799c993
1 changed files with 2 additions and 0 deletions
--- a/src/p_mach.cpp
+++ b/src/p_mach.cpp
@ -861,6 +861,8 @@ unsigned PackMachBase<T>::find_SEGMENT_gap(
    }
    unsigned const hi = msegcmd[k].fileoff + msegcmd[k].filesize;
    unsigned lo = ph.u_file_size;
+    if (lo < hi)
+        throwCantPack("bad input: LC_SEGMENT beyond end-of-file");
    unsigned j = k;
    for (;;) { // circular search, optimize for adjacent ascending
        ++j;