Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-09-21 15:12:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

arm64: zynqmp: avoid out of buffer access

Browse source 
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>
This commit is contained in:
Heinrich Schuchardt 2017-07-30 22:18:18 +02:00 committed by Michal Simek
parent 74ba69db35
commit df1cd46fb8
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
board/xilinx/zynqmp/zynqmp.c
View file

@ -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);