In the Linux kernel, the following vulnerability has been resolved: tracing: Do not call map->ops->elt_free() if elt_alloc() fails In paths where… (CVE-2026-64173)
A vulnerability in the Linux kernel tracing subsystem was resolved by preventing a call to map->ops->elt_free() when map->ops->elt_alloc() fails during object allocation. This fixes a logic error in error handling paths within tracing_map_elt_alloc().
AI Analysis
Technical Summary
The vulnerability involves the Linux kernel's tracing subsystem where, in certain error paths, the function map->ops->elt_free() was called despite the preceding map->ops->elt_alloc() call failing to allocate objects. This improper call could lead to undefined behavior or potential denial of service due to incorrect resource management. The issue was fixed by ensuring that elt_free() is not called if elt_alloc() fails.
Potential Impact
The vulnerability has no impact on confidentiality or integrity but can cause availability issues (denial of service) due to improper handling of allocation failures in the tracing subsystem. The CVSS score of 5.5 reflects a medium severity with local attack vector and low privileges required.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to prevent calling elt_free() when elt_alloc() fails. Users should apply the official kernel updates that include this fix. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or kernel maintainers' advisories for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: tracing: Do not call map->ops->elt_free() if elt_alloc() fails In paths where… (CVE-2026-64173)
Description
A vulnerability in the Linux kernel tracing subsystem was resolved by preventing a call to map->ops->elt_free() when map->ops->elt_alloc() fails during object allocation. This fixes a logic error in error handling paths within tracing_map_elt_alloc().
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability involves the Linux kernel's tracing subsystem where, in certain error paths, the function map->ops->elt_free() was called despite the preceding map->ops->elt_alloc() call failing to allocate objects. This improper call could lead to undefined behavior or potential denial of service due to incorrect resource management. The issue was fixed by ensuring that elt_free() is not called if elt_alloc() fails.
Potential Impact
The vulnerability has no impact on confidentiality or integrity but can cause availability issues (denial of service) due to improper handling of allocation failures in the tracing subsystem. The CVSS score of 5.5 reflects a medium severity with local attack vector and low privileges required.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to prevent calling elt_free() when elt_alloc() fails. Users should apply the official kernel updates that include this fix. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or kernel maintainers' advisories for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2pv6-rxgj-2695
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64173"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27a82a4a8d598912a897
Added to database: 07/19/2026, 19:38:16 UTC
Last enriched: 08/13/2026, 19:12:32 UTC
Last updated: 09/02/2026, 22:52:13 UTC
Views: 71
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