scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()

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A fix for:

BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses]
Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271

Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we
expect the size to be sanitized before first access to addl_desc_ptr[1].
Make sure we don't walk beyond end of page.

Link: https://lore.kernel.org/r/20230202162451.15346-2-thenzl@redhat.com
Cc: stable@vger.kernel.org
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Tomas Henzl 2023-02-02 17:24:48 +01:00 • committed by Martin K. Petersen

parent 833f7d4819

commit 9b4f5028e4

1 changed files with 4 additions and 2 deletions

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drivers/scsi/ses.c

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