CVE-2026-64338

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux04736c1bc32197f7d859e01a96ae80a16659931d < 6bbb98bec71b577fda4f4b48f7aea5874b04a576affected
LinuxLinux4eaf2331a77996bbbaf2b824d452ac8ebda7e6e7 < 93563243377f8e9b46cc94d9c4f06533dd31b141affected
LinuxLinux8fc246a8a456679993df565d3c9e3da28030ee43 < 1712fd71a5aaf81e47c747f180535fa963ad7830affected
LinuxLinux10132ccf99f49b43aeb7470df50d72344a601ad6 < 0b3073f40cc9f95d5ff0037eb0a06f5c1725a7eaaffected
LinuxLinux3295f1b866bfbcabd625511968e8a5c541f9ab32 < 5e62d7857fd51b908b8371062ee839739a086bbeaffected
LinuxLinux3295f1b866bfbcabd625511968e8a5c541f9ab32 < 729b68a5bad71220ae0914c8bdab9488ad5be6c8affected
LinuxLinux3295f1b866bfbcabd625511968e8a5c541f9ab32 < 48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3eaffected
LinuxLinux3295f1b866bfbcabd625511968e8a5c541f9ab32 < b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3affected
LinuxLinux02d13616ca30014ed96302e51a5b0e17664e58bcaffected
LinuxLinuxdff3b01e91a3df93063b03d0f8dd5c40546687ecaffected
LinuxLinux489d77fbd66375972a380d207f7eb39b00c4a67baffected
LinuxLinux5.10.221 < 5.10.261affected
LinuxLinux5.15.162 < 5.15.212affected
LinuxLinux6.1.96 < 6.1.178affected
LinuxLinux6.6.36 < 6.6.145affected
LinuxLinux4.19.317 < 4.20affected
LinuxLinux5.4.279 < 5.5affected
LinuxLinux6.9.7 < 6.10affected
LinuxLinux6.10affected
LinuxLinux0 < 6.10unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References