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| author | Alan Modra <amodra@gmail.com> | 2021-05-13 22:46:36 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-05-13 22:49:17 +0930 |
| commit | b96a1bcb81078d6443666a59d6a91368ac03767f (patch) | |
| tree | 64089e6159076fbb95a47621e0bb9f117a905965 | |
| parent | d21f875d6768aa1e5b8e5442c7e60b03307b1949 (diff) | |
| download | gdb-b96a1bcb81078d6443666a59d6a91368ac03767f.zip gdb-b96a1bcb81078d6443666a59d6a91368ac03767f.tar.gz gdb-b96a1bcb81078d6443666a59d6a91368ac03767f.tar.bz2 | |
PR27861, Infinite loop in dwarf.c:7507-7526
PR 27861
* dwarf.c (display_debug_str_offsets): Sanity check dwarf5
header length.
| -rw-r--r-- | binutils/ChangeLog | 6 | ||||
| -rw-r--r-- | binutils/dwarf.c | 9 |
2 files changed, 14 insertions, 1 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 335c7d0..85d21eb 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,5 +1,11 @@ 2021-05-13 Alan Modra <amodra@gmail.com> + PR 27861 + * dwarf.c (display_debug_str_offsets): Sanity check dwarf5 + header length. + +2021-05-13 Alan Modra <amodra@gmail.com> + PR 27860 * dwarf.c (display_debug_frames): Sanity check cie_off before attempting to read cie. diff --git a/binutils/dwarf.c b/binutils/dwarf.c index 20bd926..b22d33c 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -7487,7 +7487,14 @@ display_debug_str_offsets (struct dwarf_section *section, } else { - entries_end = curr + length; + if (length <= (dwarf_vma) (end - curr)) + entries_end = curr + length; + else + { + warn (_("Section %s is too small %#lx\n"), + section->name, (unsigned long) section->size); + entries_end = end; + } int version; SAFE_BYTE_GET_AND_INC (version, curr, 2, end); |