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CVE-2023-39191

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Date: October 4, 2023

An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.

Language: C

Severity Score

Related Resources (9)

https://access.redhat.com/errata/RHSA-2024:0448
https://access.redhat.com/errata/RHSA-2024:0439
https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/
https://access.redhat.com/errata/RHSA-2024:0381
https://nvd.nist.gov/vuln/detail/CVE-2023-39191
https://bugzilla.redhat.com/show_bug.cgi?id=2226783
https://access.redhat.com/security/cve/CVE-2023-39191
https://access.redhat.com/errata/RHSA-2023:6583
https://www.mend.io/vulnerability-database/CVE-2023-39191

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Insufficient Information

NVD-CWE-noinfo

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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