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CVE-2026-23290: net: usb: pegasus: validate USB endpoints

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: pegasus: validate USB endpoints The pegasus driver should validate that the device it is probing has the proper number and types of USB endpoints it is expecting before it binds to it. If a malicious device were to not have the same urbs the driver will crash later on when it blindly accesses these endpoints.

Affected products

• Linux kernel: from 2.6.12.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17 — fixed in 5.10.253, 5.15.203, 6.1.167, 6.12.77, 6.18.17, 6.19.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.253, 5.15.203, 6.1.167, 6.12.77. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/11de1d3ae5565ed22ef1f89d73d8f2d00322c699
• https://git.kernel.org/stable/c/43d7c4114b1ec14f41f09306525d3b9382286fc1
• https://git.kernel.org/stable/c/7f8505c7ce3f186ef9d2495f3c0bd6ad6fce999f
• https://git.kernel.org/stable/c/95556b4e879711693c9865ba0938c148f62d5ea4
• https://git.kernel.org/stable/c/af7369ae572f53cb701731a4289ec3b3889bc501
• https://git.kernel.org/stable/c/c3f1672eaea68c5cb6e1ec081cdb92045453218f
• https://git.kernel.org/stable/c/d5d9086211877361f1bda44a0aec538ddb04042a
• https://git.kernel.org/stable/c/ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-457936.html
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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