diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2017-07-30 22:18:18 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2017-08-02 09:11:52 +0200 |
| commit | df1cd46fb84922735e1c12f54b7202b0268dcddd (patch) | |
| tree | 1b5d9af441de42562408e954be4a8735b72aea6b /board/xilinx | |
| parent | 74ba69db35954e473a27711de89dae9572913478 (diff) | |
arm64: zynqmp: avoid out of buffer access
strncat(a, b, c) appends a maximum of c characters plus the 0 byte
to a.
In board_init we first write 4 characters plus 0 byte to version.
So only ZYNQMP_VERSION_SIZE - 5 additional characters fit into
version.
The problem was indicated by cppcheck.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'board/xilinx')
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 07e0486817..aebd3df8a9 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -172,10 +172,10 @@ int board_init(void) if (current_el() != 3) { static char version[ZYNQMP_VERSION_SIZE]; - strncat(version, "xczu", ZYNQMP_VERSION_SIZE); + strncat(version, "xczu", 4); zynqmppl.name = strncat(version, zynqmp_get_silicon_idcode_name(), - ZYNQMP_VERSION_SIZE); + ZYNQMP_VERSION_SIZE - 5); printf("Chip ID:\t%s\n", zynqmppl.name); fpga_init(); fpga_add(fpga_xilinx, &zynqmppl); |