In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix possible UAF on iso_conn_free This attempt to fix similar… (CVE-2025-40141)
A use-after-free (UAF) vulnerability in the Linux kernel's Bluetooth ISO subsystem was identified and resolved. The issue occurs in the iso_conn_free function when the conn->sk pointer is not set to NULL, potentially leading to a UAF condition. This vulnerability is similar to a previously known issue in sco_conn_free. The vulnerability has been fixed in the Linux kernel.
AI Analysis
Technical Summary
The Linux kernel Bluetooth ISO subsystem contained a use-after-free vulnerability in the iso_conn_free function. The flaw arises if the conn->sk pointer is not cleared (set to NULL), which may cause a use-after-free condition when iso_conn_free is called. This vulnerability is analogous to a previously addressed issue in sco_conn_free. The vulnerability has been resolved by ensuring proper handling of the conn->sk pointer to prevent UAF.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with local access and low privileges to cause a use-after-free condition, potentially leading to arbitrary code execution or denial of service. The CVSS v3.1 vector indicates the attack requires adjacent network access, low attack complexity, low privileges, no user interaction, and impacts confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users and administrators should apply the official Linux kernel updates that include this patch to remediate the issue. Patch status is not explicitly confirmed in the provided data; therefore, verify with the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix possible UAF on iso_conn_free This attempt to fix similar… (CVE-2025-40141)
Description
A use-after-free (UAF) vulnerability in the Linux kernel's Bluetooth ISO subsystem was identified and resolved. The issue occurs in the iso_conn_free function when the conn->sk pointer is not set to NULL, potentially leading to a UAF condition. This vulnerability is similar to a previously known issue in sco_conn_free. The vulnerability has been fixed in the Linux kernel.
CVSS v3.1
Score 8.0high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel Bluetooth ISO subsystem contained a use-after-free vulnerability in the iso_conn_free function. The flaw arises if the conn->sk pointer is not cleared (set to NULL), which may cause a use-after-free condition when iso_conn_free is called. This vulnerability is analogous to a previously addressed issue in sco_conn_free. The vulnerability has been resolved by ensuring proper handling of the conn->sk pointer to prevent UAF.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with local access and low privileges to cause a use-after-free condition, potentially leading to arbitrary code execution or denial of service. The CVSS v3.1 vector indicates the attack requires adjacent network access, low attack complexity, low privileges, no user interaction, and impacts confidentiality, integrity, and availability with high severity.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users and administrators should apply the official Linux kernel updates that include this patch to remediate the issue. Patch status is not explicitly confirmed in the provided data; therefore, verify with the Linux kernel vendor advisory for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rr62-6cpm-ww8h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-40141"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d69c2644c7f847a8ca
Added to database: 07/30/2026, 15:50:46 UTC
Last enriched: 07/30/2026, 16:52:27 UTC
Last updated: 09/10/2026, 19:38:49 UTC
Views: 18
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