Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-0799

high Nessus Plugin ID 343119

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value.
 In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures. (CVE-2026-0799)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-0799

https://security-tracker.debian.org/tracker/CVE-2026-0799

Plugin Details

Severity: High

ID: 343119

File Name: unpatched_CVE_2026_0799.nasl

Version: 1.16

Type: Local

Agent: unix

Family: Misc.

Published: 9/5/2026

Updated: 10/15/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.17

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:C/A:C

CVSS Score Source: CVE-2026-0799

CVSS v3

Risk Factor: High

Base Score: 8.7

Temporal Score: 8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:libpcap-devel, p-cpe:/a:centos:centos:libpcap, p-cpe:/a:debian:debian_linux:libpcap, p-cpe:/a:redhat:enterprise_linux:libpcap-devel, p-cpe:/a:redhat:enterprise_linux:libpcap

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/5/2026

Reference Information

CVE: CVE-2026-0799