CVE-2026-43279

HIGH EPSS 2.4%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥3.5  –  <5.15.202
linuxlinux_kernel*≥5.16  –  <6.1.165
linuxlinux_kernel*≥6.2  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6

References 7

  • git.kernel.org https://git.kernel.org/stable/c/6af16f1b8649df4c00d6ced924bdd8b72c885b6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/780dc57794a217b49994fa1d0b42465fb10a00aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8995fc0e00b3fee9bf7ecb3d836b635b730c1049
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccaf9296763be4f76b59e2cac377006016c34435
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fba2105a157fffcf19825e4eea498346738c9948
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc9e5af60dc199051dc202ae78e1fe76a9977a5e
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/6af16f1b8649df4c00d6ced924bdd8b72c885b6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/780dc57794a217b49994fa1d0b42465fb10a00aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8995fc0e00b3fee9bf7ecb3d836b635b730c1049
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccaf9296763be4f76b59e2cac377006016c34435
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa01973bb79d70c4736b6a4b2de99fbb2cbc8d1f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fba2105a157fffcf19825e4eea498346738c9948
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc9e5af60dc199051dc202ae78e1fe76a9977a5e
    Patch