From 4b8386a90802ed8e43eac2266f6e03c92b4462ed Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Fri, 23 Dec 2022 13:02:04 +0000 Subject: [PATCH] Fix illegal memory access parsing corrupt DWARF information. PR 29936 * dwarf2.c (concat_filename): Fix check for a directory index off the end of the directory table. Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=8af23b30edbaedf009bc9b243cd4dfa10ae1ac09] CVE: CVE-2023-22608 Signed-off-by: Yash Shinde --- bfd/dwarf2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index b7839ad6..8b07a24c 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -1828,7 +1828,8 @@ concat_filename (struct line_info_table *table, unsigned int file) if (table->files[file].dir /* PR 17512: file: 0317e960. */ - && table->files[file].dir <= table->num_dirs + && table->files[file].dir + <= (table->use_dir_and_file_0 ? table->num_dirs - 1 : table->num_dirs) /* PR 17512: file: 7f3d2e4b. */ && table->dirs != NULL) {