From: Mark Wielaard Date: Sat, 8 Feb 2025 23:07:39 +0000 (+0100) Subject: readelf: Skip trying to uncompress sections without a name X-Git-Tag: elfutils-0.193~44 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=73db9d2021cab9e23fd734b0a76a612d52a6f1db;p=thirdparty%2Felfutils.git readelf: Skip trying to uncompress sections without a name When combining eu-readelf -z with -x or -p to dump the data or strings in an (corrupted ELF) unnamed numbered section eu-readelf could crash trying to check whether the section name starts with .zdebug. Fix this by skipping sections without a name. * src/readelf.c (dump_data_section): Don't try to gnu decompress a section without a name. (print_string_section): Likewise. https://sourceware.org/bugzilla/show_bug.cgi?id=32656 Signed-off-by: Mark Wielaard --- diff --git a/src/readelf.c b/src/readelf.c index 21b92a08..da379216 100644 --- a/src/readelf.c +++ b/src/readelf.c @@ -13327,7 +13327,7 @@ dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name) _("Couldn't uncompress section"), elf_ndxscn (scn)); } - else if (startswith (name, ".zdebug")) + else if (name && startswith (name, ".zdebug")) { if (elf_compress_gnu (scn, 0, 0) < 0) printf ("WARNING: %s [%zd]\n", @@ -13378,7 +13378,7 @@ print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name) _("Couldn't uncompress section"), elf_ndxscn (scn)); } - else if (startswith (name, ".zdebug")) + else if (name && startswith (name, ".zdebug")) { if (elf_compress_gnu (scn, 0, 0) < 0) printf ("WARNING: %s [%zd]\n",