[Bug 255507] traceroute6 generates wrong UDP checksum

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255507

--- Comment #2 from commit-hook at FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=1d712c05370dca8cbf81d1ecd9acd606fdcacaf4

commit 1d712c05370dca8cbf81d1ecd9acd606fdcacaf4
Author:     Zhenlei Huang <zlei.huang at gmail.com>
AuthorDate: 2021-05-03 16:46:19 +0000
Commit:     Mark Johnston <markj at FreeBSD.org>
CommitDate: 2021-05-03 17:24:30 +0000

    traceroute6: Properly calculate UDP checksum

    The revision D25604 capsicumize traceroute6. For UDP the send socket was
    changed from SOCK_DGRAM to SOCK_RAW and thus the UDP checksum need be
    calculated by application itself other than the kernel.

    outpacket is filled with zeros by line 707, thus the first round the UDP
    checksum is correct. But subsequent rounds outudp->uh_sum will be left
    with garbage.

    PR:             255507
    Reviewed by:    ae, markj, tuexen
    MFC after:      3 days
    Differential Revision:  https://reviews.freebsd.org/D30042

 usr.sbin/traceroute6/traceroute6.c | 1 +
 1 file changed, 1 insertion(+)

-- 
You are receiving this mail because:
You are the assignee for the bug.