ACK: [SRU OEM-5.14, OEM-5.17 0/1] net: sched: Fix use after free in red_enqueue()

[Tim Gardner]

On 4/20/23 7:34 PM, Cengiz Can wrote:
> BugLink: https://bugs.launchpad.net/bugs/2017013
> 
> [Impact]
> We can't use "skb" again after passing it to qdisc_enqueue(). This is
> basically identical to commit 2f09707 ("sch_sfb: Also store skb
> len before calling child enqueue").
> 
> Fixes: d7f4f33 ("sch_red: update backlog as well")
> 
> [Fix]
> Cherry picked from upstream.
> 
> [Test case]
> Compile, boot and basic network functionality tested using ntop.
> 
> [Potential regression]
> Low. This has been in multiple trees for a while now.
> 
> Dan Carpenter (1):
>    net: sched: Fix use after free in red_enqueue()
> 
>   net/sched/sch_red.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc