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BUG/MEDIUM: peers: prevent learning expiration too far in futur from unsync node

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This patch sets the expire of the entry to the max value in
configuration if the value showed in the peer update message
is too far in futur.

This should be backported an all supported branches.
This commit is contained in:
Emeric Brun 2025-04-03 10:32:30 +02:00 committed by Willy Tarreau
parent 00461fbfbf
commit b02b8453d1
1 changed files with 3 additions and 0 deletions
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3
src/peers.c
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@ -1740,6 +1740,9 @@ static int peer_treat_updatemsg(struct appctx *appctx, struct peer *p, int updt,
memcpy(&expire, *msg_cur, expire_sz);
*msg_cur += expire_sz;
expire = ntohl(expire);
/* Protocol contains expire in MS, check if value is less than table config */
if (expire > table->expire)
expire = table->expire;
/* the rest of the code considers expire as ticks and not MS */
expire = MS_TO_TICKS(expire);
}