CVE-2023-52907

Kernel memory corruption via asynchronous URB race

Published Aug 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux PN533 USB NFC driver allows local users to corrupt kernel memory via asynchronous USB completion. pn533_send_async_complete frees skb data still referenced as out_urb's transfer buffer when in_urb completes first. Reachability requires an attached PN533 USB reader and local access to its NFC control path; successful reuse can disclose or alter kernel memory or crash the host.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the Linux PN533 USB NFC driver allows local users to corrupt kernel memory via asynchronous USB completion. pn533_send_async_complete frees skb data still referenced as out_urb's transfer buffer when in_urb completes first. Reachability requires an attached PN533 USB reader and local access to its NFC control path; successful reuse can disclose or alter kernel memory or crash the host.

The record

CVE
CVE-2023-52907
Published
Aug 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1
  2. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <0ca78c99656f5c448567db1e148367aa3b01c80a
  3. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <321db5131c92983dac4f3338e8fbb6df214238c0
  4. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <35529d6b827eedb6bf7e81130e4b7e0aba9e58d2
  5. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <39ae73e581112cfe27ba50aecb1c891ce57cecb1
  6. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <8998db5021a28ad67aa8d627bdb4226e4046ccc4
  7. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <9424d2205fe94a095fb9365ec0c6137f0b394a2b
  8. Affected versionversion=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <9dab880d675b9d0dd56c6428e4e8352a3339371d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.1; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <0ca78c99656f5c448567db1e148367aa3b01c80a; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <321db5131c92983dac4f3338e8fbb6df214238c0; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <35529d6b827eedb6bf7e81130e4b7e0aba9e58d2; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <39ae73e581112cfe27ba50aecb1c891ce57cecb1; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <8998db5021a28ad67aa8d627bdb4226e4046ccc4; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <9424d2205fe94a095fb9365ec0c6137f0b394a2b; version=c46ee38620a2aa2b25b16bc9738ace80dbff76a4 <9dab880d675b9d0dd56c6428e4e8352a3339371d

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo