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| author |   Stefano Garzarella <sgarzare@redhat.com> | 2026-05-21 14:47:32 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2026-05-22 19:05:10 -0700 |
| commit | 4157501b9a8ff1bbe32ff5a7d8aece7ab18eff40 (patch) | |
| tree | b7cad3d345959255207318314dec17412acaccb9 /tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com | |
| parent | net/iucv: fix locking in .getsockopt (diff) | |
vsock/virtio: fix skb overhead overflow on 32-bit builds
On 32-bit architectures, both skb_queue_len() and SKB_TRUESIZE(0) evaluate
to 32-bit values. The multiplication can overflow before being assigned to
the u64 skb_overhead variable, making the skb overhead check ineffective.
Cast skb_queue_len() to u64 so the multiplication is always performed in
64-bit arithmetic.
This issue was reported by Sashiko while reviewing another patch.
Fixes: 059b7dbd20a6 ("vsock/virtio: fix potential unbounded skb queue")
Closes: https://sashiko.dev/#/patchset/20260518090656.134588-1-sgarzare%40redhat.com
Cc: stable@vger.kernel.org
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20260521124732.125771-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions