diff options
| -rw-r--r-- | src/libsystemd-network/sd-ndisc.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/src/libsystemd-network/sd-ndisc.c b/src/libsystemd-network/sd-ndisc.c index c7969dbc1c..36c6d444cc 100644 --- a/src/libsystemd-network/sd-ndisc.c +++ b/src/libsystemd-network/sd-ndisc.c @@ -336,7 +336,7 @@ static int ndisc_prefix_update(sd_ndisc *nd, ssize_t len, assert(prefix_opt); if (len < prefix_opt->nd_opt_pi_len) - return -ENOMSG; + return -EBADMSG; if (!(prefix_opt->nd_opt_pi_flags_reserved & (ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO))) return 0; @@ -411,20 +411,19 @@ static int ndisc_prefix_update(sd_ndisc *nd, ssize_t len, return 0; } -static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, ssize_t len) { +static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, size_t len) { void *opt; struct nd_opt_hdr *opt_hdr; assert(nd); assert(ra); - len -= sizeof(*ra); - if (len < NDISC_OPT_LEN_UNITS) { + if (len < sizeof(struct nd_router_advert) + NDISC_OPT_LEN_UNITS) { log_ndisc(nd, "Router Advertisement below minimum length"); - - return -ENOMSG; + return -EBADMSG; } + len -= sizeof(struct nd_router_advert); opt = ra + 1; opt_hdr = opt; @@ -434,7 +433,7 @@ static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, ssize_t len struct nd_opt_prefix_info *opt_prefix; if (opt_hdr->nd_opt_len == 0) - return -ENOMSG; + return -EBADMSG; switch (opt_hdr->nd_opt_type) { case ND_OPT_MTU: @@ -580,7 +579,7 @@ static int ndisc_router_advertisement_recv(sd_event_source *s, int fd, uint32_t pref == ND_RA_FLAG_PREF_HIGH ? "high" : pref == ND_RA_FLAG_PREF_LOW ? "low" : "medium", lifetime); - r = ndisc_ra_parse(nd, ra, len); + r = ndisc_ra_parse(nd, ra, (size_t) len); if (r < 0) { log_ndisc_errno(nd, r, "Could not parse Router Advertisement: %m"); return 0; |