bpf: reject negative CO-RE accessor indices in bpf_core_parse_spec()
CVE-2026-45839 is a vulnerability related to the BPF (Berkeley Packet Filter) subsystem where negative CO-RE (Compile Once – Run Everywhere) accessor indices are rejected in the bpf_core_parse_spec() function. The provided information is limited and does not include technical details beyond this function-level description. No CVSS score or detailed impact analysis is available, and there are no known exploits in the wild. The affected products include Microsoft and Azure Linux 3. 0 versions. No patch or remediation details are provided in the available data.
AI Analysis
Technical Summary
This vulnerability involves the BPF subsystem's handling of CO-RE accessor indices in the bpf_core_parse_spec() function, specifically rejecting negative indices. The issue is identified in Microsoft and Azure Linux 3.0 products. No further technical details, such as exploitation methods or impact scope, are provided in the source data.
Potential Impact
The impact of this vulnerability is not explicitly described in the available information. There are no known exploits in the wild, and no CVSS score or detailed impact assessment is provided. Without additional data, the precise consequences of exploitation cannot be determined.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
bpf: reject negative CO-RE accessor indices in bpf_core_parse_spec()
Description
CVE-2026-45839 is a vulnerability related to the BPF (Berkeley Packet Filter) subsystem where negative CO-RE (Compile Once – Run Everywhere) accessor indices are rejected in the bpf_core_parse_spec() function. The provided information is limited and does not include technical details beyond this function-level description. No CVSS score or detailed impact analysis is available, and there are no known exploits in the wild. The affected products include Microsoft and Azure Linux 3. 0 versions. No patch or remediation details are provided in the available data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the BPF subsystem's handling of CO-RE accessor indices in the bpf_core_parse_spec() function, specifically rejecting negative indices. The issue is identified in Microsoft and Azure Linux 3.0 products. No further technical details, such as exploitation methods or impact scope, are provided in the source data.
Potential Impact
The impact of this vulnerability is not explicitly described in the available information. There are no known exploits in the wild, and no CVSS score or detailed impact assessment is provided. Without additional data, the precise consequences of exploitation cannot be determined.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45839
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a18ab8ee29bf47b502895e5
Added to database: 5/28/2026, 8:54:38 PM
Last enriched: 5/28/2026, 9:11:00 PM
Last updated: 5/29/2026, 9:03:28 AM
Views: 4
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