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-rw-r--r--sideband.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sideband.c b/sideband.c
index 7f9dc229fb..fde8adc000 100644
--- a/sideband.c
+++ b/sideband.c
@@ -137,11 +137,11 @@ ssize_t send_sideband(int fd, int band, const char *data, ssize_t sz, int packet
if (packet_max - 5 < n)
n = packet_max - 5;
if (0 <= band) {
- sprintf(hdr, "%04x", n + 5);
+ xsnprintf(hdr, sizeof(hdr), "%04x", n + 5);
hdr[4] = band;
write_or_die(fd, hdr, 5);
} else {
- sprintf(hdr, "%04x", n + 4);
+ xsnprintf(hdr, sizeof(hdr), "%04x", n + 4);
write_or_die(fd, hdr, 4);
}
write_or_die(fd, p, n);