From 3e307d538c351aa9327cbad672c884059ecc20dd Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Wed, 11 Jan 2023 12:13:46 +0000 Subject: [PATCH] Fix a potential illegal memory access in the BFD library when parsing a corrupt DWARF file. PR 29988 * dwarf2.c (read_indexed_address): Fix check for an out of range offset. Upstream-Status: Backport [https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3e307d538c351aa9327cbad672c884059ecc20dd] CVE: CVE-2023-1579 Signed-off-by: Yash Shinde --- bfd/ChangeLog | 6 ++++++ bfd/dwarf2.c | 2 +- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 6eb6e04e6e5..4ec0053a111 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -1412,7 +1412,7 @@ read_indexed_address (uint64_t idx, struct comp_unit *unit) offset += unit->dwarf_addr_offset; if (offset < unit->dwarf_addr_offset || offset > file->dwarf_addr_size - || file->dwarf_addr_size - offset < unit->offset_size) + || file->dwarf_addr_size - offset < unit->addr_size) return 0; info_ptr = file->dwarf_addr_buffer + offset; -- 2.31.1