File 0011-babeld-fix-11808-to-avoid-infinite-loops.p... of Package frr

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File 0011-babeld-fix-11808-to-avoid-infinite-loops.patch of Package frr (Revision 4e2312bb5def7b15f8ca8e1b8087dd11)

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From 8a8f20d89585aa490e3cae5ad705ce23107fc1fe Mon Sep 17 00:00:00 2001
From: harryreps <harryreps@gmail.com>
Date: Fri, 3 Mar 2023 23:17:14 +0000
Upsteam: yes
References: CVE-2023-3748,bsc#1213434,gh#FRRouting/frr#11808,https://github.com/FRRouting/frr/pull/12952
Subject: [PATCH] babeld: fix #11808 to avoid infinite loops

Replacing continue in loops to goto done so that index of packet buffer
increases.

Signed-off-by: harryreps <harryreps@gmail.com>
(cherry picked from commit ae1e0e1fed77716bc06f181ad68c4433fb5523d0)
Signed-off-by: Marius Tomaschewski <mt@suse.com>

diff --git a/babeld/message.c b/babeld/message.c
index 7d45d91bf7..2bf2337965 100644
--- a/babeld/message.c
+++ b/babeld/message.c
@@ -439,7 +439,7 @@ parse_packet(const unsigned char *from, struct interface *ifp,
 			debugf(BABEL_DEBUG_COMMON,
 			       "Received Hello from %s on %s that does not have all 0's in the unused section of flags, ignoring",
 			       format_address(from), ifp->name);
-			continue;
+			goto done;
 		}
 
 		/*
@@ -451,7 +451,7 @@ parse_packet(const unsigned char *from, struct interface *ifp,
 			debugf(BABEL_DEBUG_COMMON,
 			       "Received Unicast Hello from %s on %s that FRR is not prepared to understand yet",
 			       format_address(from), ifp->name);
-			continue;
+			goto done;
 		}
 
 		DO_NTOHS(seqno, message + 4);
@@ -469,7 +469,7 @@ parse_packet(const unsigned char *from, struct interface *ifp,
 			debugf(BABEL_DEBUG_COMMON,
 			       "Received hello from %s on %s should be ignored as that this version of FRR does not know how to properly handle interval == 0",
 			       format_address(from), ifp->name);
-			continue;
+			goto done;
 		}
 
 		changed = update_neighbour(neigh, seqno, interval);
-- 
2.35.3

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File 0011-babeld-fix-11808-to-avoid-infinite-loops.patch of Package frr (Revision 4e2312bb5def7b15f8ca8e1b8087dd11)

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