What’s Vulnerable › Vulnerabilities

CVE-2026-63900: USB: serial: keyspan: fix missing indat transfer sanity check

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan: fix missing indat transfer sanity check Add the missing sanity check on the size of usa49wg indat transfers to avoid parsing stale or uninitialised slab data.

Affected products

• Linux kernel: from 2.6.23 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; from 6.7 before 6.12.93; from 6.13 before 6.18.35 — fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35
• Linux kernel: 2.6.23 — fixed in 7.1

How to fix

Upgrade to a fixed version: Linux kernel 5.10.259, 5.15.210, 6.1.176, 6.6.143; Linux kernel 7.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0bde5431037a076ff3750da2165fd77a6f5ff058
• https://git.kernel.org/stable/c/3759a40738b83bb61699c85f063202b514b94f77
• https://git.kernel.org/stable/c/41d9673941eebdde62ee73848fcfe4ae1105c979
• https://git.kernel.org/stable/c/ab8336a7e414f018430aa1af3a46944032f7ff96
• https://git.kernel.org/stable/c/bd6c5fe59f374b63173afe5cf0ab38a9a370f2c1
• https://git.kernel.org/stable/c/e124120e89b61a967e40dee6b5e1ecafc45c09d9
• https://git.kernel.org/stable/c/ea2b792330b44b6d7ce671c3e1d59d0c121f7ed1
• https://git.kernel.org/stable/c/f7f566ad7519c7ca3bc9071350002940a2b0e22a

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