w1: validate slave string length before checking separator

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w1_atoreg_num() checks buf[2] for the family/id separator before proving
the input contains that byte.

Require at least the family and separator prefix before checking the
separator.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/2026063007047999.4-ccfa108-0039-w1-validate-slave-string-le-pengpeng@iscas.ac.cn
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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Pengpeng Hou 2026-06-30 14:57:38 +08:00 • committed by Krzysztof Kozlowski

parent 169ae5e65e

commit 73f46553fd

1 changed files with 5 additions and 0 deletions

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drivers/w1/w1.c

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