[SRU][O/N/J/F][PATCH 0/1] CVE-2024-53164

[Ian Whitfield]

[Impact]

Changes to sch->q.qlen around qdisc_tree_reduce_backlog() need to happen
_before_ a call to said function because otherwise it may fail to notify
parent qdiscs when the child is about to become empty.

[Backport]

The patch was applied cleanly.

[Fix]

Oracular:	backport
Noble:		backport
Jammy:		backport
Focal:		backport
Bionic: 	sent to ESM ML
Xenial:		not affected

[Test Case]

Compile and boot tested

[Where problems could occur]

This fix affects those who use CAKE or CHOKe for network scheduling. An
issue with this fix would be visible to the user via unexpected network
behavior or potentially a use-after-free.

Lion Ackermann (1):
  net: sched: fix ordering of qlen adjustment

 net/sched/sch_cake.c  | 2 +-
 net/sched/sch_choke.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

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2.43.0