net: airoha: fix foe_check_time allocation size

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foe_check_time is declared as u16 pointer but was allocated with
only ppe_num_entries bytes instead of ppe_num_entries * sizeof(u16).

When airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2,
it writes beyond the allocated buffer, causing heap buffer overflow and
potential kernel crash.

Fixes: 6d5b601d52 ("net: airoha: ppe: Dynamically allocate foe_check_time array in airoha_ppe struct")
Signed-off-by: Wayen Yan <win847@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/178161119471.2163752.14373384830691569758@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Wayen Yan 2026-06-16 19:52:36 +08:00 • committed by Jakub Kicinski

parent 440a974492

commit 5c121ee635

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/airoha/airoha_ppe.c

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