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-rw-r--r--libbb/inet_cksum.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/libbb/inet_cksum.c b/libbb/inet_cksum.c
index 31bf8c4d9..3d5dc3adf 100644
--- a/libbb/inet_cksum.c
+++ b/libbb/inet_cksum.c
@@ -21,8 +21,12 @@ uint16_t FAST_FUNC inet_cksum(uint16_t *addr, int nleft)
}
/* Mop up an odd byte, if necessary */
- if (nleft)
- sum += *(uint8_t*)addr;
+ if (nleft == 1) {
+ if (BB_LITTLE_ENDIAN)
+ sum += *(uint8_t*)addr;
+ else
+ sum += *(uint8_t*)addr << 8;
+ }
/* Add back carry outs from top 16 bits to low 16 bits */
sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */