CVE-2026-43156

MEDIUM EPSS 2.4%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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: net: usb: pegasus: enable basic endpoint checking pegasus_probe() fills URBs with hardcoded endpoint pipes without verifying the endpoint descriptors: - usb_rcvbulkpipe(dev, 1) for RX data - usb_sndbulkpipe(dev, 2) for TX data - usb_rcvintpipe(dev, 3) for status interrupts A malformed USB device can present these endpoints with transfer types that differ from what the driver assumes. Add a pegasus_usb_ep enum for endpoint numbers, replacing magic constants throughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints() calls before any resource allocation to verify endpoint types before use, rejecting devices with mismatched descriptors at probe time, and avoid triggering assertion. Similar fix to - commit 90b7f2961798 ("net: usb: rtl8150: enable basic endpoint checking") - commit 9e7021d2aeae ("net: usb: catc: enable basic endpoint checking")

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

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

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥2.6.12.1  –  <5.10.252
linuxlinux_kernel*≥5.11  –  <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
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9
    Patch