commit f03ac75239e0981deaf4aa18f66f423bcc5ce051

Author: Mark Wielaard <mark@klomp.org>

Date:   Wed Mar 27 21:54:06 2019 +0100

    strip: Files with symbols referring to non-existing sections are illformed

    The check added in commit 4540ea98c "strip: Fix check test for SHN_XINDEX

    symbol" was not complete. The (extended) section index should also exist.

    If it doesn't exist, mark the file as illformed.

    https://sourceware.org/bugzilla/show_bug.cgi?id=24385

    Signed-off-by: Mark Wielaard <mark@klomp.org>

diff --git a/src/strip.c b/src/strip.c

index a73009d9..4cd87506 100644

--- a/src/strip.c

+++ b/src/strip.c

@@ -1975,6 +1975,7 @@ handle_elf (int fd, Elf *elf, const char *prefix, const char *fname,

 				  && shndxdata->d_buf != NULL);

 		    size_t sidx = (sym->st_shndx != SHN_XINDEX

 				   ? sym->st_shndx : xshndx);

+		    elf_assert (sidx < shnum);

 		    sec = shdr_info[sidx].idx;

 		    if (sec != 0)