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range check dir_ndx before use

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This commit is contained in:
Andrew Tridgell
2024-11-26 16:12:45 +11:00
parent 688f5c379a
commit 344327385f
1 changed files with 4 additions and 0 deletions
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4
flist.c
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@@ -2585,6 +2585,10 @@ struct file_list *recv_file_list(int f, int dir_ndx)
#endif
if (inc_recurse && dir_ndx >= 0) {
if (dir_ndx >= dir_flist->used) {
rprintf(FERROR_XFER, "rsync: refusing invalid dir_ndx %u >= %u\n", dir_ndx, dir_flist->used);
exit_cleanup(RERR_PROTOCOL);
}
struct file_struct *file = dir_flist->files[dir_ndx];
if (file->flags & FLAG_GOT_DIR_FLIST) {
rprintf(FERROR_XFER, "rsync: refusing malicious duplicate flist for dir %d\n", dir_ndx);