From: contact@capsize.online
To: linux-bluetooth@vger.kernel.org
Cc: Capsize Security <contact@capsize.online>
Subject: [PATCH] monitor: validate Return Link Keys length before parsing (CVE-2026-105460)
Date: Mon, 26 Oct 2026 19:31:12 -0600 [thread overview]
Message-ID: <20261027013113.555921-1-contact@capsize.online> (raw)
From: Capsize Security <contact@capsize.online>
Fixes public issue bluez/bluez#2687 (also filed as GitHub PR #2715 for
reference). return_link_keys_evt() loops over evt->num_keys entries of
22 bytes while the dispatcher only enforces plen >= 1; a crafted
btsnoop capture overflows the on-stack packet buffer (ASan-confirmed).
The patch rejects short payloads with the file's too-short-packet idiom.
Verified: pristine btmon + crafted capture -> ASan stack-buffer-overflow;
patched btmon -> clean reject, exit 0; boundary matrix + unit checks pass.
Assisted-by: Muse-Code:muse-spark
---
next reply other threads:[~2026-10-27 1:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-27 1:31 contact [this message]
2026-10-27 1:31 ` [PATCH 1/1] monitor: validate Return Link Keys length before parsing contact
2026-10-27 3:19 ` [1/1] " bluez.test.bot
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