From 431d48ef288983b62df2afb435dc8c6101a34cf8 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Sat, 6 Aug 2022 17:36:32 +0930 Subject: [PATCH] asan: segfault in coff_write_auxent_fname More fuzzed input file nonsense. * coffgen.c (coff_write_symbol): Don't call coff_write_auxent_fname when extrap is NULL. --- bfd/coffgen.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/bfd/coffgen.c b/bfd/coffgen.c index 07b3fb446aa..4d2b82e4a6f 100644 --- a/bfd/coffgen.c +++ b/bfd/coffgen.c @@ -1058,7 +1058,8 @@ coff_write_symbol (bfd *abfd, /* Adjust auxent only if this isn't the filename auxiliary entry. */ if (native->u.syment.n_sclass == C_FILE - && (native + j + 1)->u.auxent.x_file.x_ftype) + && (native + j + 1)->u.auxent.x_file.x_ftype + && (native + j + 1)->extrap) coff_write_auxent_fname (abfd, (char *) (native + j + 1)->extrap, &(native + j + 1)->u.auxent, strtab, hash); -- 2.30.2