Detections
Analytics

TencentOS Server 2: kernel (TSSA-2026:1223)

critical Nessus Plugin ID 372224

Synopsis

The remote TencentOS Server 2 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1223 advisory.

 Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:

 CVE-2026-99999:
 In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum.

 If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of mischief.

 This was discovered and reported by Paulos, and has been reporoduced by others independently since.

 We really shouldn't allow such packets in, but as a defence in depth measure, let's also check before we complete the checksum.

 A more complete validation at input is forthcoming, but needs more work.

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

See Also

https://mirrors.tencent.com/tlinux/errata/tssa-20261223.xml

Plugin Details

Severity: Critical

ID: 372224

File Name: tencentos_TSSA_2026_1223.nasl

Version: 1.1

Type: Local

Published: 10/27/2026

Updated: 10/27/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8

Percentile: 99.69

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-99999

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.4

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

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

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:2, p-cpe:/a:tencent:tencentos_server:kernel

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/23/2026

Vulnerability Publication Date: 10/1/2026

Reference Information

CVE: CVE-2026-99999