Re: [PATCH 0/2] vsock/virtio: Fix data loss/disclosure due to joining of non-linear skb in RX queue

From: Michal Luczaj
Date: Thu Jan 08 2026 - 05:06:03 EST

Next message: Niklas Cassel: "Re: [PATCH v4 1/2] PCI: endpoint: Add BAR subrange mapping support"
Previous message: Jinhui Guo: "Re: [PATCH 01/33] PCI: Prepare to protect against concurrent isolated cpuset change"
In reply to: Michal Luczaj: "[PATCH 0/2] vsock/virtio: Fix data loss/disclosure due to joining of non-linear skb in RX queue"
Next in thread: Michal Luczaj: "[PATCH 2/2] vsock/test: Add test for a linear and non-linear skb getting coalesced"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On 1/8/26 10:54, Michal Luczaj wrote:
> Loopback transport coalesces some skbs too eagerly. Handling a zerocopy
> (non-linear) skb as a linear one leads to skb data loss and kernel memory
> disclosure.
>
> Plug the loss/leak by allowing only linear skb join. Provide a test.

Aaand I forgot to set the "net" prefix. Please let me know if I should
resend just for that.

Sorry,
Michal

Next message: Niklas Cassel: "Re: [PATCH v4 1/2] PCI: endpoint: Add BAR subrange mapping support"
Previous message: Jinhui Guo: "Re: [PATCH 01/33] PCI: Prepare to protect against concurrent isolated cpuset change"
In reply to: Michal Luczaj: "[PATCH 0/2] vsock/virtio: Fix data loss/disclosure due to joining of non-linear skb in RX queue"
Next in thread: Michal Luczaj: "[PATCH 2/2] vsock/test: Add test for a linear and non-linear skb getting coalesced"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]