ACK: [PATCH 0/2][SRU][D/E] CVE-2019-11683: UDP GRO Denial-of-Service

[Steve Beattie]

On Fri, May 03, 2019 at 05:22:51PM +0000, Tyler Hicks wrote:
> https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11683.html
> 
>  udp_gro_receive_segment in net/ipv4/udp_offload.c in the Linux kernel 5.x
>  through 5.0.11 allows remote attackers to cause a denial of service
>  (slab-out-of-bounds memory corruption) or possibly have unspecified other
>  impact via UDP packets with a 0 payload, because of mishandling of padded
>  packets, aka the "GRO packet of death" issue.
> 
> Clean cherry picks and build log. I've verified that the syzbot reproducer
> crashes the 5.0.0-13.14 Disco kernel but not once these fixes are applied. I've
> also regression tested with the udpgso.sh, udpgso_bench.sh, udpgro_bench.sh,
> and udpgro.sh net selftests.
> 
> Tyler
> 
> Eric Dumazet (1):
>   udp: fix GRO packet of death
> 
> Paolo Abeni (1):
>   udp: fix GRO reception in case of length mismatch

+1 from me. Thanks!

-- 
Steve Beattie
<sbeattie at ubuntu.com>
http://NxNW.org/~steve/
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