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| author | Jon Turney <jon.turney@dronecode.org.uk> | 2020-01-02 00:25:56 +0000 |
|---|---|---|
| committer | Jon Turney <jon.turney@dronecode.org.uk> | 2020-01-06 18:30:44 +0000 |
| commit | a08c904d4e9688a869242d9cec1b64ca23b1214e (patch) | |
| tree | f2323563785cc167155240fa846194ae34e7379f /gdb | |
| parent | 89a65580f4522f81ef7e4e49298b24f3ebc14355 (diff) | |
| download | gdb-a08c904d4e9688a869242d9cec1b64ca23b1214e.zip gdb-a08c904d4e9688a869242d9cec1b64ca23b1214e.tar.gz gdb-a08c904d4e9688a869242d9cec1b64ca23b1214e.tar.bz2 | |
Fix a crash with a malformed PE header
Don't try to read the PE export table when no section contains the RVA
for it.
(I have a PE executable [1] packed with UPX, where the export table data
directory entry contains a RVA which doesn't correspond to any section.
Mistakenly trying to debug this with gdb makes it crash.)
[1] https://cygwin.com/setup/setup-2.898.x86_64.exe
gdb/ChangeLog:
2020-01-02 Jon Turney <jon.turney@dronecode.org.uk>
* coff-pe-read.c (read_pe_exported_syms): Don't try to read the
export table if no section contains it's RVA.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/coff-pe-read.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 177b505..9a3cca2 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2020-01-02 Jon Turney <jon.turney@dronecode.org.uk> + + * coff-pe-read.c (read_pe_exported_syms): Don't try to read the + export table if no section contains it's RVA. + 2020-01-06 Eli Zaretskii <eliz@gnu.org> * windows-tdep.c: Fix a typo in WINDOWS_SIGABRT. diff --git a/gdb/coff-pe-read.c b/gdb/coff-pe-read.c index e1c51d4..d0c1e05 100644 --- a/gdb/coff-pe-read.c +++ b/gdb/coff-pe-read.c @@ -441,6 +441,12 @@ read_pe_exported_syms (minimal_symbol_reader &reader, } } + if (expptr == 0) + { + /* no section contains export table rva */ + return; + } + export_rva = export_opthdrrva; export_size = export_opthdrsize; |