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CVE-2025-40141— Bluetooth: ISO: Fix possible UAF on iso_conn_free

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，该漏洞源于未清除conn->sk指针，可能导致释放后重用。

CVSS 8.0 · High EPSS 0.30% · P23

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux ccf74f2390d60a2f9a75ef496d2564abb478f46a< eba6d787ec117a5d2c60f9644e0a39c18542b6be affected
ccf74f2390d60a2f9a75ef496d2564abb478f46a< 5319145a07d8bf5b0782b25cb3115825689d42bb affected
ccf74f2390d60a2f9a75ef496d2564abb478f46a< 80689777919f02328eb873769de4647c9dd3e371 affected
ccf74f2390d60a2f9a75ef496d2564abb478f46a< c92ad1a155ccfa38b87bd1d998287e1c0a24248d affected
ccf74f2390d60a2f9a75ef496d2564abb478f46a< 9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8 affected
6.0 affected
< 6.0 unaffected
6.1.156≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-40141

Vulnerability Information
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Vulnerability Title
Bluetooth: ISO: Fix possible UAF on iso_conn_free
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix possible UAF on iso_conn_free This attempt to fix similar issue to sco_conn_free where if the conn->sk is not set to NULL may lead to UAF on iso_conn_free.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/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，该漏洞源于未清除conn->sk指针，可能导致释放后重用。
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 ccf74f2390d60a2f9a75ef496d2564abb478f46a ~ eba6d787ec117a5d2c60f9644e0a39c18542b6be -
Linux Linux 6.0 -

II. Public POCs for CVE-2025-40141

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III. Intelligence Information for CVE-2025-40141

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Patches & Fixes for CVE-2025-40141 (1)

Same Patch Batch · Linux · 2025-11-12 · 96 CVEs total

CVE-2025-40176 9.8 CRITICAL tls: wait for pending async decryptions if tls_strp_msg_hold fails
CVE-2025-40140 8.8 HIGH net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast
CVE-2025-40135 8.1 HIGH ipv6: use RCU in ip6_xmit()
CVE-2025-40158 8.1 HIGH ipv6: use RCU in ip6_output()
CVE-2025-40204 8.1 HIGH sctp: Fix MAC comparison to be constant-time
CVE-2025-40186 8.1 HIGH tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().
CVE-2025-40133 8.1 HIGH mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().
CVE-2025-40168 8.1 HIGH smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().
CVE-2025-40149 7.8 HIGH tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().
CVE-2025-40190 7.8 HIGH ext4: guard against EA inode refcount underflow in xattr update
CVE-2025-40139 7.8 HIGH smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set().
CVE-2025-40151 7.8 HIGH LoongArch: BPF: No support of struct argument in trampoline programs
CVE-2025-40182 7.8 HIGH crypto: skcipher - Fix reqsize handling
CVE-2025-40173 7.8 HIGH net/ip6_tunnel: Prevent perpetual tunnel growth
CVE-2025-40165 7.8 HIGH media: nxp: imx8-isi: m2m: Fix streaming cleanup on release
CVE-2025-40174 7.8 HIGH x86/mm: Fix SMP ordering in switch_mm_irqs_off()
CVE-2025-40172 7.8 HIGH accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
CVE-2025-40170 7.8 HIGH net: use dst_dev_rcu() in sk_setup_caps()
CVE-2025-40169 7.8 HIGH bpf: Reject negative offsets for ALU ops
CVE-2025-40167 7.8 HIGH ext4: detect invalid INLINE_DATA + EXTENTS flag combination

Showing top 20 of 96 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40141

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