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Differential D50665

route: fix rtentry double free
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Authored by kp on Jun 3 2025, 12:49 PM.
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melifaro

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melifaro
ae
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pfsense
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rG38c655093c6b: route: fix rtentry double free
Summary

add_route_flags() frees the rtentry on error when called with the RTM_F_CREATE
flag. Don't free the rtentry a second time.

Sponsored by: Rubicon Communications, LLC ("Netgate")

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rG FreeBSD src repository
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Event Timeline

kp created this revision.Jun 3 2025, 12:49 PM
Herald added a reviewer: melifaro. · View Herald TranscriptJun 3 2025, 12:49 PM
Herald added subscribers: glebius, melifaro, ae, imp. · View Herald Transcript
kp requested review of this revision.Jun 3 2025, 12:49 PM
Harbormaster completed remote builds in B64614: Diff 156471.Jun 3 2025, 12:49 PM
kp added a parent revision: D50664: UPDATING: document recent pf changes.Jun 3 2025, 12:49 PM
ae added inline comments.Jun 3 2025, 3:38 PM
sys/net/route/route_ctl.c
676

Then isn't this access to freed rt_new?

kp added inline comments.Jun 3 2025, 3:56 PM
sys/net/route/route_ctl.c
676

Good catch, I missed that one.
I think we can get away with using 'rt' here instead of 'rt_new', because rt_new should be a copy of rt.

kp updated this revision to Diff 156478.Jun 3 2025, 4:26 PM

Remove one more use of rt_new

Harbormaster completed remote builds in B64618: Diff 156478.Jun 3 2025, 4:26 PM
ae accepted this revision.Jun 5 2025, 7:36 AM
This revision is now accepted and ready to land.Jun 5 2025, 7:36 AM
Closed by commit rG38c655093c6b: route: fix rtentry double free (authored by kp). · Explain WhyJun 5 2025, 9:33 AM
This revision was automatically updated to reflect the committed changes.
kp added a commit: rG38c655093c6b: route: fix rtentry double free.

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PathSize
sys/
net/
route/
3 lines

Diff 156573

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sys/net/route/route_ctl.c

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