In the Linux kernel, the following vulnerability has been resolved: ima: Instantiate file_truncate and path_truncate hooks Instantiate the… (CVE-2026-74592)
A vulnerability in the Linux kernel related to the Integrity Measurement Architecture (IMA) has been resolved by instantiating the file_truncate and path_truncate hooks. These hooks reset the action cache flags when file truncation is requested, ensuring that the file is re-collected, re-measured, re-audited, and re-appraised on the next access according to policy.
AI Analysis
Technical Summary
The Linux kernel vulnerability identified as CVE-2026-74592 involves the IMA subsystem not properly resetting action cache flags upon file truncation. By instantiating the file_truncate and path_truncate Linux Security Module (LSM) hooks, the kernel now resets the IMA_DONE_MASK flags as soon as truncation is requested. This change ensures that affected files are re-evaluated for integrity on subsequent access, maintaining the intended security policy enforcement.
Potential Impact
Without these hooks, files that are truncated might not be re-measured or re-appraised properly, potentially allowing integrity violations to go undetected. The fix restores the expected behavior of the IMA subsystem to maintain file integrity verification after truncation events.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding the file_truncate and path_truncate hooks to reset IMA cache flags on truncation. Users should update to the fixed kernel version once available. Patch status is not yet confirmed from vendor advisories; check the official Linux kernel release notes or vendor advisories for the exact fixed versions and update guidance.
In the Linux kernel, the following vulnerability has been resolved: ima: Instantiate file_truncate and path_truncate hooks Instantiate the… (CVE-2026-74592)
Description
A vulnerability in the Linux kernel related to the Integrity Measurement Architecture (IMA) has been resolved by instantiating the file_truncate and path_truncate hooks. These hooks reset the action cache flags when file truncation is requested, ensuring that the file is re-collected, re-measured, re-audited, and re-appraised on the next access according to policy.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability identified as CVE-2026-74592 involves the IMA subsystem not properly resetting action cache flags upon file truncation. By instantiating the file_truncate and path_truncate Linux Security Module (LSM) hooks, the kernel now resets the IMA_DONE_MASK flags as soon as truncation is requested. This change ensures that affected files are re-evaluated for integrity on subsequent access, maintaining the intended security policy enforcement.
Potential Impact
Without these hooks, files that are truncated might not be re-measured or re-appraised properly, potentially allowing integrity violations to go undetected. The fix restores the expected behavior of the IMA subsystem to maintain file integrity verification after truncation events.
Mitigation Recommendations
A fix has been implemented in the Linux kernel by adding the file_truncate and path_truncate hooks to reset IMA cache flags on truncation. Users should update to the fixed kernel version once available. Patch status is not yet confirmed from vendor advisories; check the official Linux kernel release notes or vendor advisories for the exact fixed versions and update guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-hgmq-24pq-jx89
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-74592"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a8a27f3acd9273b499bc8b0
Added to database: 08/22/2026, 22:51:31 UTC
Last enriched: 08/22/2026, 23:10:36 UTC
Last updated: 08/23/2026, 01:50:06 UTC
Views: 4
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