APPLIED: [SRU][J][PATCH 0/1] CVE-2024-36945

[Stefan Bader]

On 29.04.25 15:11, Massimiliano Pellizzer wrote:
> BugLink: https://bugs.launchpad.net/bugs/2109601
> https://ubuntu.com/security/CVE-2024-36945
> 
> [Impact]
> 
> net/smc: fix neighbour and rtable leak in smc_ib_find_route()
> 
> In smc_ib_find_route(), the neighbour found by neigh_lookup() and rtable
> resolved by ip_route_output_flow() are not released or put before return.
> It may cause the refcount leak, so fix it.
> 
> 
> [Fix]
> 
> Cherry pick the fix commit in Jammy:
> - 2ddc0dd7fec8 net/smc: fix neighbour and rtable leak in smc_ib_find_route()
> 
> [Test Plan]
> 
> Compile tested only.
> 
> 
> [Where Problems Could Occur]
> 
> The fix affects the SMC-R RDMA route resolution subsystem.
> An issue with this fix may lead to incorrect handling of
> reference counting neighbor and routing table objects
> during RDMA path establishment.
> A user might experience problems such asfailed RDMA connection setups
> resulting in fallback to TCP even on capable hardware.
> 

Applied to jammy:linux/master-next. Thanks.

-Stefan

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