Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.19, < 6.3 |
| Fedoraproject | Fedora | 38 |
| Redhat | Enterprise Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0381Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0439Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0448Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-39191Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226783Issue TrackingPatchThird Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/PatchThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0381Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0439Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0448Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-39191Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226783Issue TrackingPatchThird Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/PatchThird Party AdvisoryVDB Entry
FAQ
What is CVE-2023-39191?
CVE-2023-39191 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 ...
How severe is CVE-2023-39191?
CVE-2023-39191 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-39191?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux.