SB2026092166 - Anolis OS update for openssl
Published: September 21, 2026 Updated: September 30, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-63074)
CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in OpenSSL CMP extraCerts caching when processing rejected CMP messages containing additional certificates. A remote user can repeatedly send CMP requests with unique extra certificates to cause a denial of service.
The issue affects servers that reuse a single OSSL_CMP_CTX for the lifetime of the server process, allowing the untrusted certificate stack to grow without being expunged after message rejection.
2) NULL pointer dereference (CVE-ID: CVE-2026-63076)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper type validation leading to invalid pointer dereference in OpenSSL CMP password-based protection verification when processing a crafted protectionAlg parameter in a CMP message. A remote attacker can send a specially crafted CMP message to cause a denial of service.
CMP is a specialized feature that must be explicitly enabled, and on the client side exploitation is possible when communicating with a malicious or on-path CMP server.
Remediation
Install update from vendor's website.