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Fedora 44 : libseccomp (2026-752186819e)

high Nessus Plugin ID 327898

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-752186819e advisory.

 # `libseccomp` 2.6.1

 ## packaging changes
 - Enable Python bindings on Fedora 44+

 ## upstream changes - July 1, 2026
 - Update the syscall table for Linux v7.1.0-rc4
 - Fix incorrect 64-bit comparison merge that can weaken libseccomp filters.
 See GitHub Advisory [GHSA-4q85-33p6-j5g6](https://github.com/seccomp/libseccomp/security/advisories/GHSA-4q85-33p6-j5g6)
 - Fix issue where oversized libseccomp filters can trigger a double free.
 See GitHub Advisory [GHSA-46fr- jh49-xvhx](https://github.com/seccomp/libseccomp/security/advisories/GHSA-46fr-jh49-xvhx)
 - Fix issue where oversized libseccomp filters can trigger a heap corruption.
 See GitHub Advisory [GHSA-2hqh-5c36-grrm](https://github.com/seccomp/libseccomp/security/advisories/GHSA-2hqh-5c36-grrm)
 - Fix struct aliasing undefined behavior in the internal libseccomp hash algorithm
 - Fix issue where extraneous bytes were being copied to the destination buffer in seccomp_export_bpf_mem()
 - Fix a bug where merged libseccomp filters failed to merge the notify_used flag, leading to no listener file descriptor being generated
 - Update python shebang to point to python3
 - Add documentation for seccomp_transaction_start()
 - Since support for s390 has been removed from the upstream Linux kernel, freeze libseccomp's s390 syscall table at Linux v6.18


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

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

Solution

Update the affected libseccomp package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-752186819e

Plugin Details

Severity: High

ID: 327898

File Name: fedora_2026-752186819e.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/19/2026

Updated: 7/19/2026

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:libseccomp, cpe:/o:fedoraproject:fedora:44

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/18/2026

Vulnerability Publication Date: 7/18/2026

Reference Information