Date: Tue, 02 Aug 2022 14:51:33 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 265064] connect(2): unexpected EADDRINUSE when connecting from IPv6 wildcard to IPv4 address Message-ID: <bug-265064-7501-Sa1UcY7Fqv@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-265064-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-265064-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D265064 --- Comment #15 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D637f317c6d9c0c689677f499fc78ac545= b192071 commit 637f317c6d9c0c689677f499fc78ac545b192071 Author: Mike Karels <karels@FreeBSD.org> AuthorDate: 2022-07-29 14:23:23 +0000 Commit: Mike Karels <karels@FreeBSD.org> CommitDate: 2022-08-02 14:49:46 +0000 IPv6: fix problem with duplicate port assignment with v4-mapped addrs In in_pcb_lport_dest(), if an IPv6 socket does not match any other IPv6 socket using in6_pcblookup_local(), and if the socket can also connect to IPv4 (the INP_IPV4 vflag is set), check for IPv4 matches as well. Otherwise, we can allocate a port that is used by an IPv4 socket (possibly one created from IPv6 via the same procedure), and then connect() can fail with EADDRINUSE, when it could have succeeded if the bound port was not in use. PR: 265064 Submitted by: firk at cantconnect.ru (with modifications) Reviewed by: bz, melifaro Differential Revision: https://reviews.freebsd.org/D36012 sys/netinet/in_pcb.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --=20 You are receiving this mail because: You are the assignee for the bug.=
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