From: Pauli Virtanen <noreply@github.com>
To: linux-bluetooth@vger.kernel.org
Subject: [bluez/bluez] 3faa27: shared/vcp: use iov_pull in input parsing
Date: Sat, 03 May 2025 08:19:13 -0700 [thread overview]
Message-ID: <bluez/bluez/push/refs/heads/959339/000000-3faa27@github.com> (raw)
Branch: refs/heads/959339
Home: https://github.com/bluez/bluez
Commit: 3faa27fd30ce85d0190fe05a3c3409216ce456db
https://github.com/bluez/bluez/commit/3faa27fd30ce85d0190fe05a3c3409216ce456db
Author: Pauli Virtanen <pav@iki.fi>
Date: 2025-05-03 (Sat, 03 May 2025)
Changed paths:
M src/shared/vcp.c
Log Message:
-----------
shared/vcp: use iov_pull in input parsing
Check input is right size by using iov_pull* when parsing.
Also replace custom iov_pull_mem by equivalent util_iov_pull_mem, and
add iov_pull_string.
Fixes handling of zero-length string-valued descriptors, !value is not
error.
Fixes crashes like:
ERROR: AddressSanitizer: stack-buffer-overflow
WRITE of size 3 at 0x7b878bb77161 thread T0
#0 0x7f878eee4821 in memcpy
#1 0x0000009544d4 in read_aics_aud_ip_type src/shared/vcp.c:2713
#2 0x000000950cec in vcp_pending_complete src/shared/vcp.c:2394
#3 0x00000088b2ce in read_cb src/shared/gatt-client.c:2717
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