Improper input validation in Linux Kernel
CVE-2023-39191
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Linux Kernel
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-362.8.1.el9_3
- Red Hat Enterprise Linux 9.2 Extended Update Support — versions 0:5.14.0-284.48.1.el9_2, 0:5.14.0-284.48.1.rt14.333.el9_2
- Red Hat Enterprise Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:6583 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0381 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0439 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0448 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-39191 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- www.zerodayinitiative.com/advisories/ZDI-CAN-19399/ (Patch, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-39191?
- CVE-2023-39191 is a high-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 8.2/10. Published 2023-10-04.
- How severe is CVE-2023-39191?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2023-39191 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.