Author: emaste
Date: Fri Dec 28 22:47:55 2018
New Revision: 342580
URL: https://svnweb.freebsd.org/changeset/base/342580
Log:
ar: detect and error out on 32-bit symbol table overflow
BSD ar currently does not support the /SYM64/ 64-bit symbol table, and
previously truncated to 32-bits, silently producing corrupted archives
larger than 4GB.
This is another overflow case in addtion to r342575.
PR: 234454
Reported by: Aijaz Baig, imp
MFC after: 2 weeks
MFC with: r342575
Sponsored by: The FreeBSD Foundation
Modified:
head/usr.bin/ar/write.c
Modified: head/usr.bin/ar/write.c
==============================================================================
--- head/usr.bin/ar/write.c Fri Dec 28 21:26:45 2018 (r342579)
+++ head/usr.bin/ar/write.c Fri Dec 28 22:47:55 2018 (r342580)
@@ -628,6 +628,9 @@ write_objs(struct bsdar *bsdar)
if (strlen(obj->name) > _MAXNAMELEN_SVR4)
add_to_ar_str_table(bsdar, obj->name);
bsdar->rela_off += _ARHDR_LEN + obj->size + obj->size % 2;
+ if (bsdar->rela_off > UINT32_MAX)
+ bsdar_errc(bsdar, EX_SOFTWARE, 0,
+ "Symbol table offset overflow");
}
/*
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