CVE-2026-43279ALSA: usb-audio: Add sanity check for OOB writes at silencing
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Add sanity check for OOB writes at silencing At silencing the playback URB packets in the implicit fb mode before the actual playback, we blindly assume that the received packets fit with the buffer size. But when the setup in the capture stream differs from the playback stream (e.g. due to the USB core limitation of max packet size), such an inconsistency may lead to OOB writes to the buffer, resulting in a crash. For addressing it, add a sanity check of the transfer buffer size at prepare_silent_urb(), and stop the data copy if the received data overflows. Also, report back the transfer error properly from there, too. Note that this doesn't fix the root cause of the playback error itself, but this merely covers the kernel Oops.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before 780dc57794a217b49994fa1d0b42465fb10a00aa; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before 8995fc0e00b3fee9bf7ecb3d836b635b730c1049; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before fc9e5af60dc199051dc202ae78e1fe76a9977a5e; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before 6af16f1b8649df4c00d6ced924bdd8b72c885b6a; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before ccaf9296763be4f76b59e2cac377006016c34435; from c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 before fba2105a157fffcf19825e4eea498346738c9948 | CNA record |
linux linux_kernel linux:linux_kernel | from 3.5 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6 | NVD |
References
- https://git.kernel.org/stable/c/fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1fpatch
- https://git.kernel.org/stable/c/780dc57794a217b49994fa1d0b42465fb10a00aapatch
- https://git.kernel.org/stable/c/8995fc0e00b3fee9bf7ecb3d836b635b730c1049patch
- https://git.kernel.org/stable/c/fc9e5af60dc199051dc202ae78e1fe76a9977a5epatch
- https://git.kernel.org/stable/c/6af16f1b8649df4c00d6ced924bdd8b72c885b6apatch
- https://git.kernel.org/stable/c/ccaf9296763be4f76b59e2cac377006016c34435patch
- https://git.kernel.org/stable/c/fba2105a157fffcf19825e4eea498346738c9948patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.