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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于缺少引用计数释放，可能导致内存泄漏。

AI Predicted 3.3 Difficulty: Easy EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1001 · Data Obfuscation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 6645b030b0c1fc5bf338bffb0044238f24b2f770 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 5be8aa2bcfb53158436182db8dee9d0b8e5901e6 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 7398d6570501edc55a50ece820f369ab3c1df2e7 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< d1f6d20b3c2642ec85ce6ea5da7155746c31c6d0 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 7ff14eb070f0efecb2606f8d7aa01b77d188e886 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 00477cab053dc4816b99141d8fcca7a479cfebeb affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 4551d6cea00224ab65a0ef35e4e6da0e9c0a2d74 affected
c46ee38620a2aa2b25b16bc9738ace80dbff76a4< 12133a483dfa832241fbbf09321109a0ea8a520e affected
… +10 more rows
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I. Basic Information for CVE-2026-23291

Vulnerability Information
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Vulnerability Title
nfc: pn533: properly drop the usb interface reference on disconnect
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于缺少引用计数释放，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c46ee38620a2aa2b25b16bc9738ace80dbff76a4 ~ 6645b030b0c1fc5bf338bffb0044238f24b2f770 -
Linux Linux 3.1 -

II. Public POCs for CVE-2026-23291

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III. Intelligence Information for CVE-2026-23291

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Patches & Fixes for CVE-2026-23291 (6)

Same Patch Batch · Linux · 2026-03-25 · 116 CVEs total

CVE-2026-23395 8.8 HIGH Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ
CVE-2026-31788 8.2 HIGH xen/privcmd: restrict usage in unprivileged domU
CVE-2026-23280 7.8 HIGH accel/amdxdna: Prevent ubuf size overflow
CVE-2026-23317 7.8 HIGH drm/vmwgfx: Return the correct value in vmw_translate_ptr functions
CVE-2026-23393 7.8 HIGH bridge: cfm: Fix race condition in peer_mep deletion
CVE-2026-23392 7.8 HIGH netfilter: nf_tables: release flowtable after rcu grace period on error
CVE-2026-23391 7.8 HIGH netfilter: xt_CT: drop pending enqueued packets on template removal
CVE-2026-23340 7.8 HIGH net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs
CVE-2026-23372 7.8 HIGH nfc: rawsock: cancel tx_work before socket teardown
CVE-2026-23306 7.8 HIGH scsi: pm8001: Fix use-after-free in pm8001_queue_command()
CVE-2026-23288 7.8 HIGH accel/amdxdna: Fix out-of-bounds memset in command slot handling
CVE-2026-23378 7.8 HIGH net/sched: act_ife: Fix metalist update behavior
CVE-2026-23336 7.8 HIGH wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()
CVE-2026-23351 7.8 HIGH netfilter: nft_set_pipapo: split gc into unlink and reclaim phase
CVE-2026-23350 7.8 HIGH drm/xe/queue: Call fini on exec queue creation fail
CVE-2026-23383 7.8 HIGH bpf, arm64: Force 8-byte alignment for JIT buffer to prevent atomic tearing
CVE-2026-23364 7.4 HIGH ksmbd: Compare MACs in constant time
CVE-2026-23294 7.0 HIGH bpf: Fix race in devmap on PREEMPT_RT
CVE-2026-23358 drm/amdgpu: Fix error handling in slot reset
CVE-2026-23357 can: mcp251x: fix deadlock in error path of mcp251x_open

Showing top 20 of 116 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23291

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