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.
References (7)
Core 7
Core References
Patch, Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2023:6583
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0381
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0439
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:0448
Third Party Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-39191
Issue Tracking, Patch, Third Party Advisory issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2226783
Scores
CVSS v3
8.2
EPSS
0.0002
EPSS Percentile
3.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-20
Status
published
Products (3)
fedoraproject/fedora
38
linux/linux_kernel
5.19 - 6.3
redhat/enterprise_linux
9.0
Published
Oct 04, 2023
Tracked Since
Feb 18, 2026