In the Linux kernel, the following vulnerability has been resolved: page_pool: always add GFP_NOWARN for ATOMIC allocations Driver authors often… (CVE-2025-68321)
A vulnerability in the Linux kernel related to the page_pool subsystem has been resolved. The issue involved the lack of the GFP_NOWARN flag for ATOMIC page allocations, which driver authors often omit. This omission can cause unnecessary warnings during out-of-memory (OOM) conditions, particularly affecting network receive (Rx) paths. The fix ensures that page_pool adds GFP_NOWARN by default for ATOMIC allocations to prevent these warnings.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's page_pool subsystem arises because driver authors frequently forget to add the GFP_NOWARN flag when performing ATOMIC page allocations. This leads to warning messages during OOM situations, which are expected in network receive paths. The resolution involves modifying page_pool to always include GFP_NOWARN for ATOMIC allocations, reducing unnecessary warnings and improving kernel behavior under memory pressure.
Potential Impact
This vulnerability does not affect confidentiality or integrity but can cause denial of service by triggering warnings and potentially impacting system stability during out-of-memory conditions in network receive paths. The CVSS vector indicates no impact on confidentiality or integrity but a high impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or vendor advisories are provided, users should monitor official Linux kernel updates for the fix that adds GFP_NOWARN for ATOMIC allocations in page_pool.
In the Linux kernel, the following vulnerability has been resolved: page_pool: always add GFP_NOWARN for ATOMIC allocations Driver authors often… (CVE-2025-68321)
Description
A vulnerability in the Linux kernel related to the page_pool subsystem has been resolved. The issue involved the lack of the GFP_NOWARN flag for ATOMIC page allocations, which driver authors often omit. This omission can cause unnecessary warnings during out-of-memory (OOM) conditions, particularly affecting network receive (Rx) paths. The fix ensures that page_pool adds GFP_NOWARN by default for ATOMIC allocations to prevent these warnings.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's page_pool subsystem arises because driver authors frequently forget to add the GFP_NOWARN flag when performing ATOMIC page allocations. This leads to warning messages during OOM situations, which are expected in network receive paths. The resolution involves modifying page_pool to always include GFP_NOWARN for ATOMIC allocations, reducing unnecessary warnings and improving kernel behavior under memory pressure.
Potential Impact
This vulnerability does not affect confidentiality or integrity but can cause denial of service by triggering warnings and potentially impacting system stability during out-of-memory conditions in network receive paths. The CVSS vector indicates no impact on confidentiality or integrity but a high impact on availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or vendor advisories are provided, users should monitor official Linux kernel updates for the fix that adds GFP_NOWARN for ATOMIC allocations in page_pool.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-r8w7-3p4p-f22f
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68321"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d29c2644c7f8477983
Added to database: 07/30/2026, 15:50:42 UTC
Last enriched: 07/30/2026, 18:56:03 UTC
Last updated: 09/10/2026, 19:38:48 UTC
Views: 14
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