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CVE-2026-64338

UnknownEPSS 0.18%

Last modified

CVE-2026-64338 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: USB: misc: uss720: unregister parport on probe failure uss720_probe() registers a parport before reading the 1284 register used to detect unsupported Belkin F5U002 adapters. If get_1284_register() fails, the error path drops the driver private data and the USB device reference, but leaves the parport device registered. Leaving the port registered is more than a private allocation leak: parport_register_port() has already reserved a parport number and registered the parport bus device, while pp->private_data still points at the private data that the common error path is about to release. Undo the pre-announce registration in the get_1284_register() failure branch before jumping to the common private-data cleanup path. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: USB: misc: uss720: unregister parport on probe failure uss720_probe() registers a parport before reading the 1284 register used to detect unsupported Belkin F5U002 adapters. If get_1284_register() fails, the error path drops the driver private data and the USB device reference, but leaves the parport device registered. Leaving the port registered is more than a private allocation leak: parport_register_port() has already reserved a parport number and registered the parport bus device, while pp->private_data still points at the private data that the common error path is about to release. Undo the pre-announce registration in the get_1284_register() failure branch before jumping to the common private-data cleanup path. Clear priv->pp first, matching the disconnect path and avoiding a stale pointer in the private data. This issue was identified during our ongoing static-analysis research while reviewing kernel code.

Metrics

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 04736c1bc32197f7d859e01a96ae80a16659931d, < 6bbb98bec71b577fda4f4b48f7aea5874b04a576; >= 4eaf2331a77996bbbaf2b824d452ac8ebda7e6e7, < 93563243377f8e9b46cc94d9c4f06533dd31b141; >= 8fc246a8a456679993df565d3c9e3da28030ee43, < 1712fd71a5aaf81e47c747f180535fa963ad7830; >= 10132ccf99f49b43aeb7470df50d72344a601ad6, < 0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea; >= 3295f1b866bfbcabd625511968e8a5c541f9ab32, < 5e62d7857fd51b908b8371062ee839739a086bbe; >= 3295f1b866bfbcabd625511968e8a5c541f9ab32, < 729b68a5bad71220ae0914c8bdab9488ad5be6c8; >= 3295f1b866bfbcabd625511968e8a5c541f9ab32, < 48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e; >= 3295f1b866bfbcabd625511968e8a5c541f9ab32, < b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3; 02d13616ca30014ed96302e51a5b0e17664e58bc; dff3b01e91a3df93063b03d0f8dd5c40546687ec; 489d77fbd66375972a380d207f7eb39b00c4a67b; >= 5.10.221, < 5.10.261; >= 5.15.162, < 5.15.212; >= 6.1.96, < 6.1.178; >= 6.6.36, < 6.6.145; >= 4.19.317, < 4.20; >= 5.4.279, < 5.5; >= 6.9.7, < 6.10
LinuxLinux6.10

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-64338?
In the Linux kernel, the following vulnerability has been resolved: USB: misc: uss720: unregister parport on probe failure uss720_probe() registers a parport before reading the 1284 register used to detect unsupported Belkin F5U002 adapters. If get_1284_register() fails, the error path drops the driver private data and the USB device reference, but leaves the parport device registered. Leaving the port registered is more than a private allocation leak: parport_register_port() has already reserved a parport number and registered the parport bus device, while pp->private_data still points at the private data that the common error path is about to release. Undo the pre-announce registration in the get_1284_register() failure branch before jumping to the common private-data cleanup path. Clear priv->pp first, matching the disconnect path and avoiding a stale pointer in the private data. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
How severe is CVE-2026-64338?
Severity scoring for CVE-2026-64338 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-64338?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST