CVE-2023-39191
HIGH severity · CVSS 8.2 · Improper input validation
8.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredHigh
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products we track (3)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=2226783 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=2226783Patch
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/Patch
- https://access.redhat.com/errata/RHSA-2023:6583Advisory
- https://access.redhat.com/errata/RHSA-2024:0381Advisory
- https://access.redhat.com/errata/RHSA-2024:0439Advisory
- https://access.redhat.com/errata/RHSA-2024:0448Advisory
- https://access.redhat.com/security/cve/CVE-2023-39191Advisory