CVE-2026-64338USB: misc: uss720: unregister parport on probe failure
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 04736c1bc32197f7d859e01a96ae80a16659931d – < 6bbb98bec71b577fda4f4b48f7aea5874b04a576
- affected 4eaf2331a77996bbbaf2b824d452ac8ebda7e6e7 – < 93563243377f8e9b46cc94d9c4f06533dd31b141
- affected 8fc246a8a456679993df565d3c9e3da28030ee43 – < 1712fd71a5aaf81e47c747f180535fa963ad7830
- affected 10132ccf99f49b43aeb7470df50d72344a601ad6 – < 0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea
- affected 3295f1b866bfbcabd625511968e8a5c541f9ab32 – < 5e62d7857fd51b908b8371062ee839739a086bbe
- affected 3295f1b866bfbcabd625511968e8a5c541f9ab32 – < 729b68a5bad71220ae0914c8bdab9488ad5be6c8
- affected 3295f1b866bfbcabd625511968e8a5c541f9ab32 – < 48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e
- affected 3295f1b866bfbcabd625511968e8a5c541f9ab32 – < b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3
- affected 02d13616ca30014ed96302e51a5b0e17664e58bc
- affected dff3b01e91a3df93063b03d0f8dd5c40546687ec
- affected 489d77fbd66375972a380d207f7eb39b00c4a67b
- affected 5.10.221 – < 5.10.261
- affected 5.15.162 – < 5.15.212
- affected 6.1.96 – < 6.1.178
- affected 6.6.36 – < 6.6.145
- affected 4.19.317 – < 4.20
- affected 5.4.279 – < 5.5
- affected 6.9.7 – < 6.10
- affected 6.10
- unaffected < 6.10
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.96 – ≤ 6.12.*
- unaffected 6.18.39 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/6bbb98bec71b577fda4f4b48f7aea5874b04a576 (opens in a new tab)
- https://git.kernel.org/stable/c/93563243377f8e9b46cc94d9c4f06533dd31b141 (opens in a new tab)
- https://git.kernel.org/stable/c/1712fd71a5aaf81e47c747f180535fa963ad7830 (opens in a new tab)
- https://git.kernel.org/stable/c/0b3073f40cc9f95d5ff0037eb0a06f5c1725a7ea (opens in a new tab)
- https://git.kernel.org/stable/c/5e62d7857fd51b908b8371062ee839739a086bbe (opens in a new tab)
- https://git.kernel.org/stable/c/729b68a5bad71220ae0914c8bdab9488ad5be6c8 (opens in a new tab)
- https://git.kernel.org/stable/c/48dd0b2ec9f2e97c486eb68cd0a64b25c1c3df3e (opens in a new tab)
- https://git.kernel.org/stable/c/b4ecbdc4f8830f5586c4a5cfc384c00f20f8f8b3 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-48882 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64338)Record last updated .