accel/amdxdna: Prevent ubuf size overflow

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[ Upstream commit 03808abb1d ]

The ubuf size calculation may overflow, resulting in an undersized
allocation and possible memory corruption.

Use check_add_overflow() helpers to validate the size calculation before
allocation.

Fixes: bd72d4acda ("accel/amdxdna: Support user space allocated buffer")
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260217192815.1784689-1-lizhi.hou@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Lizhi Hou 2026-02-17 11:28:15 -08:00 • committed by Sasha Levin

parent 247cd87f04

commit 1500b31db9

1 changed files with 5 additions and 1 deletions

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drivers/accel/amdxdna/amdxdna_ubuf.c

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