Bunch of vsock patches for linux-stable

Bunch of vsock patches for linux-stable

[Luigi Leonardi]

Hi stable maintainers,

I realized that several vsock patches have not been backported to stable.

They fixed various vsock bugs: incorrect buffer size clamping order,
wrong length/offset and empty payloads in tap skbs, unbounded skb
queue growth, and an accept queue counter leak.

CCing the maintainer in case he has any objections.

d114bfdc9b76 "vsock: fix buffer size clamping order"

This applies cleanly to:
5.10.y
5.15.y
6.1.y
6.6.y
6.12.y
6.18.y
7.0.y

5f344d809e01 "vsock/virtio: fix length and offset in tap skb for split packets"
This applies cleanly to:
6.12.y
6.18.y
7.0.y

does not apply cleanly to 6.6.y, I'll send a follow-up patch.

3a3e3d90cbc7 "vsock/virtio: fix empty payload in tap skb for non-linear buffers"

This patch requires "vsock/virtio: fix length and offset in tap skb
for split packets" to be applied first.
Then it applies cleanly to:
6.12.y
6.18.y
7.0.y

059b7dbd20a6 "vsock/virtio: fix potential unbounded skb queue"
This applies cleanly to:
6.12.y
6.18.y
7.0.y

52bcb57a4e8a vsock/virtio: "fix accept queue count leak on transport mismatch"
This applies cleanly to:
6.1.y
6.6.y
6.12.y
6.18.y
7.0.y

does not apply cleanly to 5.10.y and 5.15.y. I'll send a follow-up patch.

Thanks,
Luigi

Re: Bunch of vsock patches for linux-stable

[Greg KH]

On Fri, May 15, 2026 at 02:02:38PM +0200, Luigi Leonardi wrote:
> Hi stable maintainers,
> 
> I realized that several vsock patches have not been backported to stable.
> 
> They fixed various vsock bugs: incorrect buffer size clamping order,
> wrong length/offset and empty payloads in tap skbs, unbounded skb
> queue growth, and an accept queue counter leak.
> 
> CCing the maintainer in case he has any objections.
> 
> d114bfdc9b76 "vsock: fix buffer size clamping order"
> 
> This applies cleanly to:
> 5.10.y
> 5.15.y
> 6.1.y
> 6.6.y
> 6.12.y
> 6.18.y
> 7.0.y

Now done.

> 5f344d809e01 "vsock/virtio: fix length and offset in tap skb for split packets"
> This applies cleanly to:
> 6.12.y
> 6.18.y
> 7.0.y

Now done.

> 3a3e3d90cbc7 "vsock/virtio: fix empty payload in tap skb for non-linear buffers"
> 
> This patch requires "vsock/virtio: fix length and offset in tap skb
> for split packets" to be applied first.
> Then it applies cleanly to:
> 6.12.y
> 6.18.y
> 7.0.y

Now done.

> 059b7dbd20a6 "vsock/virtio: fix potential unbounded skb queue"
> This applies cleanly to:
> 6.12.y
> 6.18.y
> 7.0.y

Now done.

> 52bcb57a4e8a vsock/virtio: "fix accept queue count leak on transport mismatch"
> This applies cleanly to:
> 6.1.y
> 6.6.y
> 6.12.y
> 6.18.y
> 7.0.y

Now done, thanks!

greg k-h