Thread (3 messages) 3 messages, 3 authors, 2024-08-30

Re: [PATCH net,v7] net/smc: prevent NULL pointer dereference in txopt_get

From: patchwork-bot+netdevbpf@kernel.org
Date: 2024-08-30 12:30:25
Also in: linux-s390, lkml

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller [off-list ref]:

On Thu, 29 Aug 2024 12:56:48 +0900 you wrote:
Since smc_inet6_prot does not initialize ipv6_pinfo_offset, inet6_create()
copies an incorrect address value, sk + 0 (offset), to inet_sk(sk)->pinet6.

In addition, since inet_sk(sk)->pinet6 and smc_sk(sk)->clcsock practically
point to the same address, when smc_create_clcsk() stores the newly
created clcsock in smc_sk(sk)->clcsock, inet_sk(sk)->pinet6 is corrupted
into clcsock. This causes NULL pointer dereference and various other
memory corruptions.

[...]
Here is the summary with links:
  - [net,v7] net/smc: prevent NULL pointer dereference in txopt_get
    https://git.kernel.org/netdev/net/c/98d4435efcbf

You are awesome, thank you!
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