Merge branch 'vsock-virtio-fix-data-loss-disclosure-due-to-joining-of-non-linear-skb'

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Michal Luczaj says:

====================
vsock/virtio: Fix data loss/disclosure due to joining of non-linear skb

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.
====================

Link: https://patch.msgid.link/20260113-vsock-recv-coalescence-v2-0-552b17837cf4@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Jakub Kicinski 2026-01-15 19:44:45 -08:00

parent c4efd7a770 a63e5fe095

commit 9ad693018c

4 changed files with 86 additions and 2 deletions

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6

net/vmw_vsock/virtio_transport_common.c

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5

tools/testing/vsock/vsock_test.c

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74

tools/testing/vsock/vsock_test_zerocopy.c

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3

tools/testing/vsock/vsock_test_zerocopy.h

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