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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00215.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < 94ec20d97aa51547965a539f660a1fe79c6929a3
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < 75c0ad13e136961328253742501b4efc3988a587
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < bf20c94fa6aaff945f0ae3a23f3212cd299f28d9
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < 8a5eba992c862b0c94411eecf9b7121e8636db38
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < 7f1f24c367938c5537e2308bf9a965f051d14774
e8d5f92b8d30bb4ade76494490c3c065e12411b1 affected < 30adce93d5c4a5a1ec29d9249e3fdfcc391d406b
25c95c6bd4dc50a3c20de0fa7f450ea02b2320fc affected —
4a47581cf010dc351d8069978080fdb000c0776d affected —
d9fe88b2a38dc700bf5bd3a09c7cd11bbc248367 affected —
cedb0187b8ba929c3f76f28e6bc25804d65f8a54 affected —
e9e791f5c39ab30e374a3b1a9c25ca7ff24988f3 affected —
34f026263889e2827e04acdc3a0eb9ecbd191ef0 affected —
5f845e5d18d151230476cf90aa46449f69ba2ef1 affected —
4.4.241 affected < 4.5
4.9.241 affected < 4.10
4.14.203 affected < 4.15
4.19.154 affected < 4.20
5.4.73 affected < 5.5
5.8.17 affected < 5.9
5.9.2 affected < 5.10
Linux Linux affected
Version Status Constraints
5.10 affected —
0 unaffected < 5.10
5.10.261 unaffected ≤ 5.10.*
6.6.145 unaffected ≤ 6.6.*
6.12.96 unaffected ≤ 6.12.*
6.18.39 unaffected ≤ 6.18.*
7.1.4 unaffected ≤ 7.1.*
7.2-rc3 unaffected ≤ *

No data.

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b cve-icon
https://git.kernel.org/stable/c/75c0ad13e136961328253742501b4efc3988a587 cve-icon
https://git.kernel.org/stable/c/7f1f24c367938c5537e2308bf9a965f051d14774 cve-icon
https://git.kernel.org/stable/c/8a5eba992c862b0c94411eecf9b7121e8636db38 cve-icon
https://git.kernel.org/stable/c/94ec20d97aa51547965a539f660a1fe79c6929a3 cve-icon
https://git.kernel.org/stable/c/bf20c94fa6aaff945f0ae3a23f3212cd299f28d9 cve-icon
History

Sat, 25 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
Description 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.
Title usb: gadget: f_printer: take kref only for successful open
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-25T08:50:07.069Z

Reserved: 2026-07-19T15:36:31.781Z

Link: CVE-2026-64345

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.