Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: coresight: tmc: add the handle of the event to the path The handle is essential… (CVE-2025-68370)
In the Linux kernel, the following vulnerability has been resolved: coresight: tmc: add the handle of the event to the path The handle is essential for retrieving the AUX_EVENT of each CPU and is required in perf mode. It has been added to the coresight_path so that dependent devices can access it from the path when needed. The existing bug can be reproduced with: perf record -e cs_etm//k -C 0-9 dd if=/dev/zero of=/dev/null Showing an oops as follows: Unable to handle kernel paging request at virtual address 000f6e84934ed19e Call trace: tmc_etr_get_buffer+0x30/0x80 [coresight_tmc] (P) catu_enable_hw+0xbc/0x3d0 [coresight_catu] catu_enable+0x70/0xe0 [coresight_catu] coresight_enable_path+0xb0/0x258 [coresight]
AI Analysis
Technical Summary
CVE-2025-68370 is a vulnerability in the Linux kernel coresight subsystem where the event handle was missing from the coresight path. This handle is essential for accessing AUX_EVENT data per CPU, especially in perf mode. Without this handle, attempts to record certain events (e.g., cs_etm) on multiple CPUs can cause a kernel paging fault and crash (oops). The fix involved adding the event handle to the coresight_path structure so dependent devices can access it properly, preventing the crash.
Potential Impact
Exploitation of this vulnerability results in a kernel oops (crash) when using perf record with specific coresight events, causing denial of service on affected systems. The CVSS vector indicates local attack vector with low complexity and low privileges required, but with high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding the event handle to the coresight path. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed version and apply the update accordingly.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: coresight: tmc: add the handle of the event to the path The handle is essential… (CVE-2025-68370)
Description
In the Linux kernel, the following vulnerability has been resolved: coresight: tmc: add the handle of the event to the path The handle is essential for retrieving the AUX_EVENT of each CPU and is required in perf mode. It has been added to the coresight_path so that dependent devices can access it from the path when needed. The existing bug can be reproduced with: perf record -e cs_etm//k -C 0-9 dd if=/dev/zero of=/dev/null Showing an oops as follows: Unable to handle kernel paging request at virtual address 000f6e84934ed19e Call trace: tmc_etr_get_buffer+0x30/0x80 [coresight_tmc] (P) catu_enable_hw+0xbc/0x3d0 [coresight_catu] catu_enable+0x70/0xe0 [coresight_catu] coresight_enable_path+0xb0/0x258 [coresight]
CVSS v3.1
Score 7.8high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-68370 is a vulnerability in the Linux kernel coresight subsystem where the event handle was missing from the coresight path. This handle is essential for accessing AUX_EVENT data per CPU, especially in perf mode. Without this handle, attempts to record certain events (e.g., cs_etm) on multiple CPUs can cause a kernel paging fault and crash (oops). The fix involved adding the event handle to the coresight_path structure so dependent devices can access it properly, preventing the crash.
Potential Impact
Exploitation of this vulnerability results in a kernel oops (crash) when using perf record with specific coresight events, causing denial of service on affected systems. The CVSS vector indicates local attack vector with low complexity and low privileges required, but with high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding the event handle to the coresight path. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor updates for the exact fixed version and apply the update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3crq-qf2v-x94m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68370"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d39c2644c7f8477fd0
Added to database: 07/30/2026, 15:50:43 UTC
Last enriched: 07/30/2026, 18:41:08 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 12
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