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CVE-2026-64011— nfc: llcp: Fix use-after-free in llcp_sock_release()

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基金会开源的一款操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于在llcp_sock_release函数中存在释放后重用问题，可能导致攻击者利用此漏洞。

CVSS 7.8 · High EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux b4011239a08e7e6c2c6e970dfa9e8ecb73139261< 89ba026747019ee643d29407435ddc118e6ca908 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< fb29f6bbe433f3decad227588809636c25f2a287 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< 2dfdaaf7d933b676124aadec6698825e95f94fe9 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< e00f50f8697724a6f1d2d35744c1332c9912dac5 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< cdc17e09a636c7f936f771902535a7515a7608fc affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< 912ebc49d4406a17fe73e5671d674fbc2f6b2634 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< bc421d0826dedbba37580a25405eafb599e76d42 affected
b4011239a08e7e6c2c6e970dfa9e8ecb73139261< f4268b466190dae95a7585f69b4f1f8ad097632c affected
… +12 more rows
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I. Basic Information for CVE-2026-64011

Vulnerability Information
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Vulnerability Title
nfc: llcp: Fix use-after-free in llcp_sock_release()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: Fix use-after-free in llcp_sock_release() llcp_sock_release() unconditionally unlinks the socket from the local sockets list. However, if the socket is still in connecting state, it is on the connecting list. Fix this by checking the socket state and unlinking from the correct list.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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基金会开源的一款操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于在llcp_sock_release函数中存在释放后重用问题，可能导致攻击者利用此漏洞。
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 b4011239a08e7e6c2c6e970dfa9e8ecb73139261 ~ 89ba026747019ee643d29407435ddc118e6ca908 -
Linux Linux 3.11 -

II. Public POCs for CVE-2026-64011

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III. Intelligence Information for CVE-2026-64011

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Patches & Fixes for CVE-2026-64011 (7)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-64068 9.8 CRITICAL netfs: Fix missing locking around retry adding new subreqs
CVE-2026-63993 9.8 CRITICAL vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
CVE-2026-64142 9.8 CRITICAL ksmbd: close durable scavenger races against m_fp_list lookups
CVE-2026-64033 9.8 CRITICAL RDMA/rtrs: Fix use-after-free in path file creation cleanup
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-64061 9.8 CRITICAL netfs: Fix early put of sink folio in netfs_read_gaps()
CVE-2026-64025 9.8 CRITICAL bpf, skmsg: fix verdict sk_data_ready racing with ktls rx
CVE-2026-64089 9.8 CRITICAL batman-adv: tt: fix negative last_changeset_len
CVE-2026-64125 9.8 CRITICAL net: bcmgenet: keep RBUF EEE/PM disabled
CVE-2026-64091 9.8 CRITICAL batman-adv: tt: fix TOCTOU race for reported vlans
CVE-2026-64066 9.8 CRITICAL netfs: Fix netfs_read_to_pagecache() to pause on subreq failure
CVE-2026-63887 9.8 CRITICAL scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf
CVE-2026-63808 9.8 CRITICAL exfat: fix potential use-after-free in exfat_find_dir_entry()
CVE-2026-63978 9.8 CRITICAL net/handshake: Drain pending requests at net namespace exit
CVE-2026-64132 9.8 CRITICAL ipv6: ioam: refresh hdr pointer before ioam6_event()
CVE-2026-63979 9.8 CRITICAL net/handshake: hand off the pinned file reference to accept_doit
CVE-2026-64136 9.8 CRITICAL smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64011

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