SB2026030543 - Anolis OS update for libxml2

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Uncontrolled Recursion (CVE-ID: CVE-2026-0990)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an uncontrolled recursion in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker can pass specially crafted input to the application and perform a denial of service attack.

2) Resource exhaustion (CVE-ID: CVE-2026-0992)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

3) Memory leak (CVE-ID: CVE-2026-1757)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the interactive shell of the xmllint utility when handling whitespaces. A remote attacker can force the application to leak memory and perform denial of service attack.

Remediation

Install update from vendor's website.

References

• https://anas.openanolis.cn/errata/detail/ANSA-2026:0241