CVE-2026-64011

Local privilege escalation via wrong LLCP list unlink

Published Jul 19, 2026 · Updated Jul 19, 2026

Use-after-free in Linux Kernel NFC LLCP allows local users to gain kernel privileges through nonblocking socket connect and close calls. llcp_sock_release() unlinks a socket in LLCP_CONNECTING from the local sockets list instead of the connecting list, leaving freed socket memory reachable. An unprivileged process in init_net can trigger the flaw with an active NFC DEP link, enabling kernel memory disclosure, arbitrary writes, privilege escalation, or a kernel panic.

CVSS severity7.8
High
EPSS probability0.13%
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 Linux Kernel NFC LLCP allows local users to gain kernel privileges through nonblocking socket connect and close calls. llcp_sock_release() unlinks a socket in LLCP_CONNECTING from the local sockets list instead of the connecting list, leaving freed socket memory reachable. An unprivileged process in init_net can trigger the flaw with an active NFC DEP link, enabling kernel memory disclosure, arbitrary writes, privilege escalation, or a kernel panic.

The record

CVE
CVE-2026-64011
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-825, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=3.10.10 <3.11
  2. Affected versionversion=3.11
  3. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <2dfdaaf7d933b676124aadec6698825e95f94fe9
  4. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <89ba026747019ee643d29407435ddc118e6ca908
  5. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <912ebc49d4406a17fe73e5671d674fbc2f6b2634
  6. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <bc421d0826dedbba37580a25405eafb599e76d42
  7. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <cdc17e09a636c7f936f771902535a7515a7608fc
  8. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <e00f50f8697724a6f1d2d35744c1332c9912dac5
  9. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <f4268b466190dae95a7585f69b4f1f8ad097632c
  10. Affected versionversion=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <fb29f6bbe433f3decad227588809636c25f2a287
  11. Affected versionversion=da989ee1c7702050741a551df6866cc1588f277b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.10.10 <3.11; version=3.11; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <2dfdaaf7d933b676124aadec6698825e95f94fe9; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <89ba026747019ee643d29407435ddc118e6ca908; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <912ebc49d4406a17fe73e5671d674fbc2f6b2634; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <bc421d0826dedbba37580a25405eafb599e76d42; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <cdc17e09a636c7f936f771902535a7515a7608fc; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <e00f50f8697724a6f1d2d35744c1332c9912dac5; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <f4268b466190dae95a7585f69b4f1f8ad097632c; version=b4011239a08e7e6c2c6e970dfa9e8ecb73139261 <fb29f6bbe433f3decad227588809636c25f2a287; version=da989ee1c7702050741a551df6866cc1588f277b

Published CVSS scores

7.8LinuxCVSS: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-825Expired Pointer Dereference
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