CVE-2026-23291

MEDIUMNVD 5.5

5.5

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 v3: 5.5
EG Score: 0.0(none)
EPSS: 3.5%
KEV: Not listed

Published

March 25, 2026

Last Modified

May 29, 2026

References (8)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00477cab053dc4816b99141d8fcca7a479cfebeb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12133a483dfa832241fbbf09321109a0ea8a520e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5be8aa2bcfb53158436182db8dee9d0b8e5901e6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6645b030b0c1fc5bf338bffb0044238f24b2f770
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7398d6570501edc55a50ece820f369ab3c1df2e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ff14eb070f0efecb2606f8d7aa01b77d188e886
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0

Vendor Advisories for CVE-2026-23291(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch
2026-05-21 22:43 UTCepss_batch

Frequently asked(5)

What is CVE-2026-23291?

CVE-2026-23291 is a medium vulnerability published on March 25, 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…

When was CVE-2026-23291 disclosed?

CVE-2026-23291 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-23291 actively exploited?

CVE-2026-23291 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-23291?

CVE-2026-23291 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2026-23291?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23291, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-23291

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Is Your Infrastructure Affected by CVE-2026-23291?

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Frequently asked(5)

What is CVE-2026-23291?

When was CVE-2026-23291 disclosed?

Is CVE-2026-23291 actively exploited?

What is the CVSS score of CVE-2026-23291?

CVE-2026-23291 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2026-23291?

CVE-2026-23291

📅 Published

🔄 Last Modified

🔗 References (8)

📣 Vendor Advisories for CVE-2026-23291(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23291?

CVE-2026-23291

📅 Published

🔄 Last Modified

🔗 References (8)

📣 Vendor Advisories for CVE-2026-23291(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23291?

🔗 Related CVEs(same vendor)

Same vendor

Published

Last Modified

References (8)

Vendor Advisories for CVE-2026-23291(2)

Frequently asked(5)

Published

Last Modified

References (8)

Vendor Advisories for CVE-2026-23291(2)

Frequently asked(5)

Related CVEs(same vendor)