Re: [PATCH v4 5.10/5.15] ata: libata-scsi: check cdb length for VARIABLE_LENGTH_CMD commands

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On Thu, Jun 27, 2024 at 11:02:23AM +0900, Damien Le Moal wrote:
On 6/27/24 06:13, Mikhail Ukhin wrote:
Fuzzing of 5.10 stable branch reports a slab-out-of-bounds error in
ata_scsi_pass_thru.

The error is fixed in 5.18 by commit ce70fd9a551a ("scsi: core: Remove the
cmd field from struct scsi_request") upstream.
Backporting this commit would require significant changes to the code so
it is bettter to use a simple fix for that particular error.

This sentence is not needed in the commit message. That is a discussion to have
when applying (or not) the patch.

It's good to have this reasoning in the commit message to, so that later
when we look at the patch and try to understand why we needed something
custom for the backport, the justification will be right there.

--
Thanks,
Sasha




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