Medium 5.5Published Jul 25, 2026

CVE-2026-64345usb: gadget: f_printer: take kref only for successful open

Updated under an hour ago (Oct 26, 2026, 4:10 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_printer: take kref only for successful open printer_open() returns -EBUSY when the character device is already open, but it increments dev->kref regardless of the return value. VFS does not call ->release() for a failed open, so every rejected second open permanently leaks one reference. Move kref_get() into the successful-open branch.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before 94ec20d97aa51547965a539f660a1fe79c6929a3; from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before 75c0ad13e136961328253742501b4efc3988a587; from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before bf20c94fa6aaff945f0ae3a23f3212cd299f28d9; from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before 8a5eba992c862b0c94411eecf9b7121e8636db38; from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before 7f1f24c367938c5537e2308bf9a965f051d14774; from e8d5f92b8d30bb4ade76494490c3c065e12411b1 before 30adce93d5c4a5a1ec29d9249e3fdfcc391d406b; 25c95c6bd4dc50a3c20de0fa7f450ea02b2320fc; 4a47581cf010dc351d8069978080fdb000c0776d; and 12 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 4.4.241 before 4.5; from 4.9.241 before 4.10; from 4.14.203 before 4.15; from 4.19.154 before 4.20; from 5.4.73 before 5.5; from 5.8.17 before 5.9; from 5.9.2 before 5.10.261; from 5.11 before 6.6.145; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/94ec20d97aa51547965a539f660a1fe79c6929a3	patch
https://git.kernel.org/stable/c/75c0ad13e136961328253742501b4efc3988a587	patch
https://git.kernel.org/stable/c/bf20c94fa6aaff945f0ae3a23f3212cd299f28d9	patch
https://git.kernel.org/stable/c/8a5eba992c862b0c94411eecf9b7121e8636db38	patch
https://git.kernel.org/stable/c/7f1f24c367938c5537e2308bf9a965f051d14774	patch
https://git.kernel.org/stable/c/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.