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Linux Distros Unpatched Vulnerability : CVE-2026-104895

high Nessus Plugin ID 376168

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.

 - The asynchronous Smile parser (NonBlockingByteArrayParser) uses a raw-binary length prefix taken from untrusted input to allocate a byte[] before the body is read, with no upper bound and no overflow check.
 On the raw-binary marker 0xFD, _decodeVInt() computes (value << 6) + (i & 0x3F) without the (value >>> 25) != 0 overflow guard present in the blocking SmileParser._readUnsignedVInt, and _startRawBinary then allocates the declared length immediately. A Smile feed of roughly ten bytes can therefore force an eager allocation of approximately 2 GB, producing an OutOfMemoryError on reactive or asynchronous Smile endpoints. A VInt crafted to overflow int yields a negative length and a NegativeArraySizeException, a RuntimeException that is not a JacksonException and so escapes the parser contract. Either outcome crashes the request or processing thread. This is the same class of issue as CVE-2020-28491 in the CBOR parser of this library, which was fixed with a LONGEST_NON_CHUNKED_BINARY guard; the asynchronous Smile parser never received the equivalent guard. No privileges or user interaction beyond the ability to submit data for parsing are required. (CVE-2026-104895)

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-2026-104895

Plugin Details

Severity: High

ID: 376168

File Name: unpatched_CVE_2026_104895.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 11/4/2026

Updated: 11/4/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

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

CVSS Score Source: CVE-2026-104895

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.9

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:jackson-jaxrs-json-provider, p-cpe:/a:centos:centos:jackson-jaxrs-providers-datatypes, p-cpe:/a:centos:centos:jackson-jaxrs-providers-javadoc, p-cpe:/a:centos:centos:jackson-jaxrs-providers-parent, p-cpe:/a:centos:centos:jackson-jaxrs-providers, p-cpe:/a:centos:centos:pki-jackson-jaxrs-json-provider, p-cpe:/a:centos:centos:pki-jackson-jaxrs-providers, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-json-provider, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-providers-datatypes, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-providers-javadoc, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-providers-parent, p-cpe:/a:redhat:enterprise_linux:jackson-jaxrs-providers, p-cpe:/a:redhat:enterprise_linux:pki-jackson-jaxrs-json-provider, p-cpe:/a:redhat:enterprise_linux:pki-jackson-jaxrs-providers

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: 10/28/2026

Reference Information

CVE: CVE-2026-104895