Answer in brief
CVE-2026-43279 records a High severity (CVSS 7.8) vulnerability in ALSA: usb-audio: Add sanity check for OOB writes at silencing. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <780dc57794a217b49994fa1d0b42465fb10a00aa || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <8995fc0e00b3fee9bf7ecb3d836b635b730c1049 || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <fc9e5af60dc199051dc202ae78e1fe76a9977a5e || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <6af16f1b8649df4c00d6ced924bdd8b72c885b6a || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <ccaf9296763be4f76b59e2cac377006016c34435 || >=c75a8a7ae565d7cd9baa87a504ba9162e355b4b0 <fba2105a157fffcf19825e4eea498346738c9948 | fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f, 780dc57794a217b49994fa1d0b42465fb10a00aa, 8995fc0e00b3fee9bf7ecb3d836b635b730c1049, fc9e5af60dc199051dc202ae78e1fe76a9977a5e, 6af16f1b8649df4c00d6ced924bdd8b72c885b6a, ccaf9296763be4f76b59e2cac377006016c34435, fba2105a157fffcf19825e4eea498346738c9948 |
| Linux/Linuxgeneric | 3.5 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.