What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-10-15

Description

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.

Affected products

• 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 — fixed in 5.10.253, 5.15.203, 6.1.167, 6.12.77, 6.18.17, 6.19.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.253, 5.15.203, 6.1.167, 6.12.77. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2026-23291 or the next vulnerability affects your stack