CVE-2026-31720

HIGH EPSS 2.9%
Published May 1, 20262mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_uac1_legacy: validate control request size f_audio_complete() copies req->length bytes into a 4-byte stack variable: u32 data = 0; memcpy(&data, req->buf, req->length); req->length is derived from the host-controlled USB request path, which can lead to a stack out-of-bounds write. Validate req->actual against the expected payload size for the supported control selectors and decode only the expected amount of data. This avoids copying a host-influenced length into a fixed-size stack object.

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
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥2.6.31  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/0d41772d98dcaf6c17e875b7d0ea0154ae1191ee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/21b11e8581285c6f10ef43d05df349d445f24273
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/26304d124e7f0383f8fe1168b5801a0ac7e16b1c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/557d1d4e862eccd0b74cc377b66de3e1e8d49605
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e0e34d85cd46ceb37d16054e97a373a32770f6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e5eb1d6e6a3d7bbea9c92132d0cda5793176426
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/be2d32f0c3fe333d14c0a9ca90328dacbc3e06b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6da4fed7537aec19880c24f6c3a95065adb1406
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0d41772d98dcaf6c17e875b7d0ea0154ae1191ee
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/21b11e8581285c6f10ef43d05df349d445f24273
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/26304d124e7f0383f8fe1168b5801a0ac7e16b1c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/557d1d4e862eccd0b74cc377b66de3e1e8d49605
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6e0e34d85cd46ceb37d16054e97a373a32770f6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8e5eb1d6e6a3d7bbea9c92132d0cda5793176426
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/be2d32f0c3fe333d14c0a9ca90328dacbc3e06b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6da4fed7537aec19880c24f6c3a95065adb1406
    Patch