nfp: bpf: prevent integer overflow in nfp_bpf_event_output()

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[ Upstream commit 16ebb6f5b6 ]

The "sizeof(struct cmsg_bpf_event) + pkt_size + data_size" math could
potentially have an integer wrapping bug on 32bit systems.  Check for
this and return an error.

Fixes: 9816dd35ec ("nfp: bpf: perf event output helpers support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/6074805b-e78d-4b8a-bf05-e929b5377c28@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Dan Carpenter 2025-01-13 09:18:39 +03:00 • committed by Greg Kroah-Hartman

parent 5a3096ba2b

commit 4fc02808eb

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/netronome/nfp/bpf/offload.c

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