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| author | Markus Armbruster <armbru@redhat.com> | 2019-05-14 20:03:08 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2019-05-22 15:00:04 +0200 |
| commit | 046aba169bc21c08823cfbe8d4f3b4ad116ac676 (patch) | |
| tree | 6bd2f82bad17e551ec649f801859324225cc37e2 /target/xtensa/fpu_helper.c | |
| parent | d18dc3af478664b1d5e0dd3ace1eabb9d160f244 (diff) | |
gdbstub: Reject invalid RLE repeat counts
"Debugging with GDB / Appendix E GDB Remote Serial Protocol /
Overview" specifies "The printable characters '#' and '$' or with a
numeric value greater than 126 must not be used." gdb_read_byte()
only rejects values < 32. This is wrong. Impact depends on the caller:
* gdb_handlesig() passes a char. Incorrectly accepts '#', '$' and
'\127'.
* gdb_chr_receive() passes an uint8_t. Additionally accepts
characters with the most-significant bit set.
Correct the validity check to match the specification.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190514180311.16028-4-armbru@redhat.com>
Diffstat (limited to 'target/xtensa/fpu_helper.c')
0 files changed, 0 insertions, 0 deletions