Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A PCRE rule can be written that leads to an infinite loop when negated PCRE is used. Packet processing thread becomes stuck in infinite loop limiting visibility and availability in inline mode. This vulnerability is fixed in 7.0.9.

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

  - Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security     Monitoring engine. A PCRE rule can be written that leads to an infinite loop when negated PCRE is used.
    Packet processing thread becomes stuck in infinite loop limiting visibility and availability in inline     mode. This vulnerability is fixed in 7.0.9. (CVE-2025-29918)

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

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0285 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2025-29918:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security     Monitoring engine. A PCRE rule can be written that leads to an infinite loop when negated PCRE is used.
    Packet processing thread becomes stuck in infinite loop limiting visibility and availability in inline     mode. This vulnerability is fixed in 7.0.9.

    CVE-2025-29917:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security     Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this,     signatures using the keyword and setting can cause large memory allocations of up to 4 GiB per thread.
    This vulnerability is fixed in 7.0.9.

    CVE-2025-29916:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security     Monitoring engine. Datasets declared in rules have an option to specify the `hashsize` to use. This size     setting isn't properly limited, so the hash table allocation can be large. Untrusted rules can lead to     large memory allocations, potentially leading to denial of service due to resource starvation. This     vulnerability is fixed in 7.0.9.

    CVE-2025-29915:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security     Monitoring engine. The AF_PACKET defrag option is enabled by default and allows AF_PACKET to re-assemble     fragmented packets before reaching Suricata. However the default packet size in Suricata is based on the     network interface MTU which leads to Suricata seeing truncated packets. Upgrade to Suricata 7.0.9, which     uses better defaults and adds warnings for user configurations that may lead to issues.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-5fa61dc843 advisory.

    This is an extra release to address a critical issue in 7.0.9 affecting AF_PACKET users: setting a BPF     would cause Suricata to fail to start up. This has been fixed.

    ----

    Various security, performance, accuracy, and stability issues have been fixed. LibHTP has been updated to     version 0.5.50 which is bundled with this new release. This fixes:

    CVE-2025-29915: HIGH     CVE-2025-29917: HIGH     CVE-2025-29918: HIGH     CVE-2025-29916: Moderate

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-2a295896e6 advisory.

    This is an extra release to address a critical issue in 7.0.9 affecting AF_PACKET users: setting a BPF     would cause Suricata to fail to start up. This has been fixed.

    ----

    Various security, performance, accuracy, and stability issues have been fixed. LibHTP has been updated to     version 0.5.50 which is bundled with this new release. This fixes:

    CVE-2025-29915: HIGH     CVE-2025-29917: HIGH     CVE-2025-29918: HIGH     CVE-2025-29916: Moderate

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 1d53db32-0d60-11f0-8542-b42e991fc52e advisory.

    Suricate team reports:
    Multiple vulnerabilities     These CVEs have been reserved and no details have been yet provided.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4103 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4103-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     March 31, 2025                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : suricata     Version        : 1:6.0.1-3+deb11u1     CVE ID         : CVE-2021-45098 CVE-2023-35852 CVE-2024-32663                      CVE-2024-37151 CVE-2024-45796 CVE-2024-55626                      CVE-2025-29918


    Several issues have been found in suricata, the next Generation Intrusion     Detection and Prevention Tool. They are related to bypass of HTTP-based     signature, mishandling of multiple fragmented packets, logic errors,     infinite loops, buffer overflows, unintended file access and using large     amount of memory.



    For Debian 11 bullseye, these problems have been fixed in version     1:6.0.1-3+deb11u1.

    We recommend that you upgrade your suricata packages.

    For the detailed security status of suricata please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/suricata

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
258604	Linux Distros Unpatched Vulnerability : CVE-2025-29918	Nessus	Misc.	Local	medium
238763	TencentOS Server 4: suricata (TSSA-2025:0285)	Nessus	Tencent Local Security Checks	Local	high
233809	Fedora 41 : suricata (2025-5fa61dc843)	Nessus	Fedora Local Security Checks	Local	critical
233807	Fedora 40 : suricata (2025-2a295896e6)	Nessus	Fedora Local Security Checks	Local	critical
233787	FreeBSD : suricata -- Multiple vulnerabilities (1d53db32-0d60-11f0-8542-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	Local	critical
233594	Debian dla-4103 : suricata - security update	Nessus	Debian Local Security Checks	Local	high

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CVE-2025-29918

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