From: sashiko-bot@kernel.org
Cc: linux-security-module@vger.kernel.org
Subject: Re: [PATCH 6.6.y 1/2] AppArmor: Allow apparmor to handle unaligned dfa tables
Date: Wed, 07 Oct 2026 20:51:28 +0000 [thread overview]
Message-ID: <sashiko-outbox-163357@kernel.org> (raw)
In-Reply-To: <20261007204226.47033-2-artem@trailofbits.com>
> From: Helge Deller <deller@kernel.org>
>
> [ Upstream commit 64802f731214a51dfe3c6c27636b3ddafd003eb0 ]
>
> The dfa tables can originate from kernel or userspace and 8-byte alignment
> isn't always guaranteed and as such may trigger unaligned memory accesses
> on various architectures. Resulting in the following
>
> [ 73.901376] WARNING: CPU: 0 PID: 341 at security/apparmor/match.c:316 aa_dfa_unpack+0x6cc/0x720
> [ 74.015867] Modules linked in: binfmt_misc evdev flash sg drm drm_panel_orientation_quirks backlight i2c_core configfs nfnetlink autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid sr_mod hid cdrom
> sd_mod ata_generic ohci_pci ehci_pci ehci_hcd ohci_hcd pata_ali libata sym53c8xx scsi_transport_spi tg3 scsi_mod usbcore libphy scsi_common mdio_bus usb_common
> [ 74.428977] CPU: 0 UID: 0 PID: 341 Comm: apparmor_parser Not tainted 6.18.0-rc6+ #9 NONE
> [ 74.536543] Call Trace:
> [ 74.568561] [<0000000000434c24>] dump_stack+0x8/0x18
> [ 74.633757] [<0000000000476438>] __warn+0xd8/0x100
> [ ... ]
> Closes: https://github.com/sparclinux/issues/issues/30
> Signed-off-by: Helge Deller <deller@gmx.de>
> Signed-off-by: John Johansen <john.johansen@canonical.com>
> Assisted-by: LLM
> Signed-off-by: Artem Dinaburg <artem@trailofbits.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261007204226.47033-1-artem@trailofbits.com?part=1
next prev parent reply other threads:[~2026-10-07 20:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 20:42 [PATCH 6.6.y 0/2] apparmor: backport CVE-2026-45893, CVE-2026-46254 Artem Dinaburg
2026-10-07 20:42 ` [PATCH 6.6.y 1/2] AppArmor: Allow apparmor to handle unaligned dfa tables Artem Dinaburg
2026-10-07 20:51 ` sashiko-bot [this message]
2026-10-07 20:42 ` [PATCH 6.6.y 2/2] apparmor: Fix & Optimize table creation from possibly unaligned memory Artem Dinaburg
2026-10-07 20:49 ` sashiko-bot
2026-10-08 5:56 ` [PATCH 6.6.y 0/2] apparmor: backport CVE-2026-45893, CVE-2026-46254 Sasha Levin
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