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Vulnerability · Published Oct 4, 2023 · Assigned by redhat

CVE-2023-39191Kernel: ebpf: insufficient stack type checks in dynptr

High 8.2

In plain English

A high-severity improper input validation in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.5%top 54.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2023-39191
Debian:13linux6.3.7-1DEBIAN-CVE-2023-39191
Debian:14linux6.3.7-1DEBIAN-CVE-2023-39191
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-39191
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-39191

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-20 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References