From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13462392B8E for ; Tue, 13 Jan 2026 15:29:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318190; cv=none; b=Sm1gksHnOTNOf3lLPcnxn8tK6XSML2IxRKFBYQTVdA9UqqgBBq0BYCO6vBboe0xXBEf/jPPVWqKiNPvG/R+iaS7Rk44pIOynif8pHyUzQ9+WpLS3UeIoQz9/S8Xt1UGcpngPGZ37BOKfBFRTU8DHhdbVXFV+Eckrw6cSqbueYSI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318190; c=relaxed/simple; bh=99rqgu+DjcUw5sPa4rXyu31wnjNfsV9dUABWhLeNdRc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gUJn9tooiksVO6S8rhREqIPDn8v9L3/9BR3gSwTHXCotmLwf/dCF8vIGSdbyihRSWa7mVZuJc4E/AfNYTRVP314t9m8gkYPAM519ebxqHH7UPWk3JjpGaizKhXEFaWA8i7jHv9C4kHR5euwOrJDd0u6oW8rWSAZwEGh0p+61dTQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hf0IQVlT; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hf0IQVlT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 805E9C116C6; Tue, 13 Jan 2026 15:29:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1768318189; bh=99rqgu+DjcUw5sPa4rXyu31wnjNfsV9dUABWhLeNdRc=; h=From:To:Cc:Subject:Date:Reply-To:From; b=hf0IQVlTeoZ5tuPOuYRv4IU/R6FDSwYBapKiwmWcpA/Tm0A8EXeYhuMdv7POigOo0 KeqLa9CkPQ64KahGJA16AhBofJUX2AyL9Lw9ksps39hz2IMPutMr/CyV71iKeIT69F iy0Us9dqcXy1/DqrCNBppjxMC59PnBHkADx0Mjt4= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2025-68783: ALSA: usb-mixer: us16x08: validate meter packet indices Date: Tue, 13 Jan 2026 16:29:09 +0100 Message-ID: <2026011302-CVE-2025-68783-e807@gregkh> X-Mailer: git-send-email 2.52.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3187; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=mYcd7WpxNDKI5u9pMyZvOixqbqq2hxxmgd/z16sL/NI=; b=owGbwMvMwCRo6H6F97bub03G02pJDJlpKfvm3BRmunl8b/r9mKPBDRy3VhyLaFfx+NTd7iG/7 r6GQ3lQRywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAExk6nSGeWbqiofYjsv/rJ6u O/UV29b13TvDXRkW7EktfMRzYXLb2xerYmTrfUSWX3ffDAA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store. Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays. Introduce a local channel variable and validate it before updating the arrays. We reject negative indices, limit meter_level[] and comp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[] updates with ARRAY_SIZE(master_level). The Linux kernel CVE team has assigned CVE-2025-68783 to this issue. Affected and fixed versions =========================== Issue introduced in 4.11 with commit d2bb390a2081a36ffe906724d2848d846f2aeb29 and fixed in 6.1.160 with commit cde47f4ccad6751ac36b7471572ddf38ee91870c Issue introduced in 4.11 with commit d2bb390a2081a36ffe906724d2848d846f2aeb29 and fixed in 6.6.120 with commit 2f21a7cbaaa93926f5be15bc095b9c57c35748d9 Issue introduced in 4.11 with commit d2bb390a2081a36ffe906724d2848d846f2aeb29 and fixed in 6.12.64 with commit a8ad320efb663be30b794e3dd3e829301c0d0ed3 Issue introduced in 4.11 with commit d2bb390a2081a36ffe906724d2848d846f2aeb29 and fixed in 6.18.3 with commit eaa95228b8a56c4880a182c0350d67922b22408f Issue introduced in 4.11 with commit d2bb390a2081a36ffe906724d2848d846f2aeb29 and fixed in 6.19-rc3 with commit 5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2025-68783 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: sound/usb/mixer_us16x08.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/cde47f4ccad6751ac36b7471572ddf38ee91870c https://git.kernel.org/stable/c/2f21a7cbaaa93926f5be15bc095b9c57c35748d9 https://git.kernel.org/stable/c/a8ad320efb663be30b794e3dd3e829301c0d0ed3 https://git.kernel.org/stable/c/eaa95228b8a56c4880a182c0350d67922b22408f https://git.kernel.org/stable/c/5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e