Medium 5.5Published Mar 25, 2026

CVE-2026-23291nfc: pn533: properly drop the usb interface reference on disconnect

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: properly drop the usb interface reference on disconnect When the device is disconnected from the driver, there is a "dangling" reference count on the usb interface that was grabbed in the probe callback. Fix this up by properly dropping the reference after we are done with it.

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: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 6645b030b0c1fc5bf338bffb0044238f24b2f770; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 5be8aa2bcfb53158436182db8dee9d0b8e5901e6; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 7398d6570501edc55a50ece820f369ab3c1df2e7; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 7ff14eb070f0efecb2606f8d7aa01b77d188e886; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 00477cab053dc4816b99141d8fcca7a479cfebeb; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74; from c46ee38620a2aa2b25b16bc9738ace80dbff76a4 before 12133a483dfa832241fbbf09321109a0ea8a520e	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 7.0	NVD

References

References

https://git.kernel.org/stable/c/6645b030b0c1fc5bf338bffb0044238f24b2f770	patch
https://git.kernel.org/stable/c/5be8aa2bcfb53158436182db8dee9d0b8e5901e6	patch
https://git.kernel.org/stable/c/7398d6570501edc55a50ece820f369ab3c1df2e7	patch
https://git.kernel.org/stable/c/d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0	patch
https://git.kernel.org/stable/c/7ff14eb070f0efecb2606f8d7aa01b77d188e886	patch
https://git.kernel.org/stable/c/00477cab053dc4816b99141d8fcca7a479cfebeb	patch
https://git.kernel.org/stable/c/4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74	patch
https://git.kernel.org/stable/c/12133a483dfa832241fbbf09321109a0ea8a520e	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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.