CVE-2023-39191
Kernel: ebpf: insufficient stack type checks in dynptr
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 8.2EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
04 Oct 2023Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Extended Update SupportWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://access.redhat.com/errata/RHSA-2023:6583https://access.redhat.com/errata/RHSA-2024:0381https://access.redhat.com/errata/RHSA-2024:0439https://access.redhat.com/errata/RHSA-2024:0448https://access.redhat.com/security/cve/CVE-2023-39191https://bugzilla.redhat.com/show_bug.cgi?id=2226783https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/