diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/debug/gdbstub.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c index e271a436d60e..5774292c93ae 100644 --- a/kernel/debug/gdbstub.c +++ b/kernel/debug/gdbstub.c @@ -563,6 +563,14 @@ static void gdb_cmd_memread(struct kgdb_state *ks) if (kgdb_hex2long(&ptr, &addr) > 0 && *ptr++ == ',' && kgdb_hex2long(&ptr, &length) > 0) { + /* + * The hex-encoded reply needs 2 * length + 1 bytes + * in remcom_out_buffer[BUFMAX]. + */ + if (length > (BUFMAX - 1) / 2) { + error_packet(remcom_out_buffer, -EINVAL); + return; + } err = kgdb_mem2hex((char *)addr, remcom_out_buffer, length); if (!err) error_packet(remcom_out_buffer, -EINVAL); |