Answer in brief
CVE-2026-23291 records a Unknown severity vulnerability in nfc: pn533: properly drop the usb interface reference on disconnect. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <6645b030b0c1fc5bf338bffb0044238f24b2f770 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <5be8aa2bcfb53158436182db8dee9d0b8e5901e6 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <7398d6570501edc55a50ece820f369ab3c1df2e7 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <7ff14eb070f0efecb2606f8d7aa01b77d188e886 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <00477cab053dc4816b99141d8fcca7a479cfebeb || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74 || >=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <12133a483dfa832241fbbf09321109a0ea8a520e | 6645b030b0c1fc5bf338bffb0044238f24b2f770, 5be8aa2bcfb53158436182db8dee9d0b8e5901e6, 7398d6570501edc55a50ece820f369ab3c1df2e7, d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0, 7ff14eb070f0efecb2606f8d7aa01b77d188e886, 00477cab053dc4816b99141d8fcca7a479cfebeb, 4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74, 12133a483dfa832241fbbf09321109a0ea8a520e |
| Linux/Linuxgeneric | 3.1 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Mar 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.