Fedora 42 : libsodium (2026-b7217393db)

medium Nessus Plugin ID 282563

Synopsis

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

Description

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-b7217393db advisory.

**Version 1.0.21**

This point release includes all the changes from 1.0.20-stable, which include a security fix for the `crypto_core_ed25519_is_valid_point()` function, as well as two new sets of functions:

- The new `crypto_ipcrypt_*` functions implement mechanisms for securely encrypting and anonymizing IP addresses as specified in https://ipcrypt-std.github.io
- The `sodium_bin2ip` and `sodium_ip2bin` helper functions have been added to complement the `crypto_ipcrypt_*` functions and easily convert addresses between bytes and strings.
- XOF: the `crypto_xof_shake*` and `crypto_xof_turboshake*` functions are standard extendable output functions. From input of any length, they can derive output of any length with the same properties as hash functions. These primitives are required by many post-quantum mechanisms, but can also be used for a wide range of applications, including key derivation, session encryption and more.

----

**Version 1.0.20-stable**

- XCFramework: cross-compilation is now forced on Apple Silicon to avoid Rosetta-related build issues
- The Fil-C compiler is supported out of the box
- The CompCert compiler is supported out of the box
- MSVC 2026 (Visual Studio 2026) is now supported
- Zig builds now support FreeBSD targets
- Performance of AES256-GCM and AEGIS on ARM has been improved with some compilers
- Android binaries have been added to the NuGet package
- Windows ARM binaries have been added to the NuGet package
- The Android build script has been improved. The base SDK is now 27c, and the default platform is 21, supporting 16 KB page sizes.
- The library can now be compiled with Zig 0.15 and Zig 0.16
- Zig builds now generate position-independent static libraries by default on targets that support PIC
- arm64e builds have been added to the XCFramework packages
- XCFramework packages are now full builds instead of minimal builds
- MSVC builds have been enabled for ARM64
- iOS 32-bit (armv7/armv7s) support has been removed from the XCFramework build script
- Security: optblockers have been introduced in critical code paths to prevent compilers from introducing unwanted side channels via conditional jumps. This was observed on RISC-V targets with specific compilers and options.
- Security: `crypto_core_ed25519_is_valid_point()` now properly rejects small-order points that are not in the main subgroup
- `((nonnull))` attributes have been relaxed on some `crypto_stream*` functions to allow NULL output buffers when the output length is zero
- A cross-compilation issue with old clang versions has been fixed
- JavaScript: support for Cloudflare Workers has been added
- JavaScript: WASM_BIGINT is forcibly disabled to retain compatibility with older runtimes
- A compilation issue with old toolchains on Solaris has been fixed
- `crypto_aead_aes256gcm_is_available` is exported to JavaScript
- libsodium is now compatible with Emscripten 4.x
- Security: memory fences have been added after MAC verification in AEAD to prevent speculative access to plaintext before authentication is complete
- Assembly files now include .gnu.property notes for proper IBT and Shadow Stack support when building with CET instrumentation

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 libsodium package.

Plugin Details

Severity: Medium

ID: 282563

File Name: fedora_2026-b7217393db.nasl

Version: 1.1

Type: local

Agent: unix

Family: Fedora Local Security Checks

Published: 1/11/2026

Updated: 1/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

CVSS Score Source: CVE-2025-69277

CVSS v3

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.9

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

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

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:libsodium, cpe:/o:fedoraproject:fedora:42

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/7/2026

Vulnerability Publication Date: 12/31/2025

Reference Information

CVE: CVE-2025-69277

FEDORA: 2026-b7217393db

IAVA: 2026-A-0014

Detections

Analytics