SB2026081223 - Anolis OS update for containerd

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026081223

SB2026081223 - Anolis OS update for containerd

Published: August 12, 2026

Security Bulletin ID SB2026081223
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 33% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2026-46680)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to bypass runAsNonRoot restrictions and run a container as root.

The vulnerability exists due to improper input validation in user ID handling when processing a numeric User directive that cannot be parsed as a 32-bit integer. A remote attacker can provide a crafted image with an /etc/passwd file mapping the large numeric string to root to bypass runAsNonRoot restrictions and run a container as root.

The issue occurs when the large numeric User value is incorrectly treated as a username instead of a numeric UID.


2) Resource exhaustion (CVE-ID: CVE-2026-47262)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in group parsing when creating a container from a maliciously crafted image. A remote user can supply a specially crafted image to cause a denial of service.

Successful exploitation can exhaust memory and trigger an out-of-memory kill of the containerd process, making the runtime API unavailable.


3) Input validation error (CVE-ID: CVE-2026-53488)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary commands on the host.

The vulnerability exists due to improper input validation in the containerd CRI plugin when propagating image configuration labels to containers. A remote attacker can supply a crafted image with malicious labels to execute arbitrary commands on the host.

Exploitation requires a plugin that consumes container labels for some operations.


Remediation

Install update from vendor's website.

References