| Summary: | global-buffer-overflow in OP_G | ||
|---|---|---|---|
| Product: | binutils | Reporter: | Alexandre Adamski <aadamski> |
| Component: | binutils | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | nickc |
| Priority: | P2 | ||
| Version: | 2.29 | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Project(s) to access: | ssh public key: | ||
| Attachments: |
testcase
report |
||
Created attachment 10134 [details]
testcase
Created attachment 10135 [details]
report
The master branch has been updated by H.J. Lu <hjl@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0d96e4df4812c3bad77c229dfef47a9bc115ac12 commit 0d96e4df4812c3bad77c229dfef47a9bc115ac12 Author: H.J. Lu <hjl.tools@gmail.com> Date: Thu Jun 15 06:40:17 2017 -0700 i386-dis: Check valid bnd register Since there are only 4 bnd registers, return "(bad)" for register number > 3. PR binutils/21594 * i386-dis.c (OP_E_register): Check valid bnd register. (OP_G): Likewise. The master branch has been updated by H.J. Lu <hjl@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8cac017d35ef374e65acc98818a17cf8a652cbd0 commit 8cac017d35ef374e65acc98818a17cf8a652cbd0 Author: H.J. Lu <hjl.tools@gmail.com> Date: Thu Jun 15 08:21:48 2017 -0700 i386-dis: Add 2 tests with invalid bnd register PR binutils/21594 * testsuite/gas/i386/mpx.s: Add 2 tests with invalid bnd register. * testsuite/gas/i386/x86-64-mpx.s: Likewise. * testsuite/gas/i386/mpx.d: Updated. * testsuite/gas/i386/x86-64-mpx.d: Likewise. Patch committed. |
Hello there, I have been fuzzing objdump with American Fuzzy Lop and AddressSanitizer. Please find attached the minimized file causing the issue ("Input") and the ASAN report log ("Output"). Below is the reduced stacktrace with links to the corresponding source lines on a GitHub mirror. The command used was `objdump -D <file>`. The compilation flags used were `-g -O2 -fno-omit-frame-pointer -fsanitize=address -fno-sanitize-recover=undefined`. The configuration settings used were `--enable-targets=all --disable-shared`. Let me know if there is any additional information I can provide. -- Input: f7920e08be4fd15ae9622aaf8dc4931e.139b2c2a6fd324fdc13d6886dc01d3bf.min Output: f7920e08be4fd15ae9622aaf8dc4931e.139b2c2a6fd324fdc13d6886dc01d3bf.txt Error in "OP_G": global-buffer-overflow in OP_G at opcodes/i386-dis.c:15572 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/opcodes/i386-dis.c#L15572) in print_insn at opcodes/i386-dis.c:13336 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/opcodes/i386-dis.c#L13336) in disassemble_bytes at binutils/objdump.c:1864 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L1864) in disassemble_section at binutils/objdump.c:2309 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L2309) in bfd_map_over_sections at bfd/section.c:1395 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/bfd/section.c#L1395) in disassemble_data at binutils/objdump.c:2445 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L2445) in dump_bfd at binutils/objdump.c:3547 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L3547) in display_file at binutils/objdump.c:3714 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L3714) in main at binutils/objdump.c:4016 (see https://github.com/bminor/binutils-gdb/blob/561bf3e950e410fbcac06523d43039f1f58150ca/binutils/objdump.c#L4016)