RLSA-2026:65534

    Dashboard / Vulnerabilities / RLSA-2026:65534

    RLSA-2026:65534

    Published: 9 Sept 2026Last Modified: 9 Sept 2026

    Summary: Important: image-builder security update

    Details: A local binary for building customized OS artifacts such as VM images and OSTree commits. Uses osbuild under the hood. Security Fix(es): * crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281) * crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810) * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) * net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499) * net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820) * net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) * golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) * mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818) * net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860) * net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853) * html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858) * crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) * encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    References: https://errata.rockylinux.org/RLSA-2026:65534, https://bugzilla.redhat.com/show_bug.cgi?id=2515820, https://bugzilla.redhat.com/show_bug.cgi?id=2515827, https://bugzilla.redhat.com/show_bug.cgi?id=2484204, https://bugzilla.redhat.com/show_bug.cgi?id=2456339, https://bugzilla.redhat.com/show_bug.cgi?id=2515838, https://bugzilla.redhat.com/show_bug.cgi?id=2456335, https://bugzilla.redhat.com/show_bug.cgi?id=2515840, https://bugzilla.redhat.com/show_bug.cgi?id=2467820, https://bugzilla.redhat.com/show_bug.cgi?id=2456333, https://bugzilla.redhat.com/show_bug.cgi?id=2480756, https://bugzilla.redhat.com/show_bug.cgi?id=2467809, https://bugzilla.redhat.com/show_bug.cgi?id=2467822, https://bugzilla.redhat.com/show_bug.cgi?id=2515815, https://bugzilla.redhat.com/show_bug.cgi?id=2515839, https://access.redhat.com/errata/RHSA-2026:65534

    Affected packages

    Package

    Name: image-builder

    Purl: pkg:rpm/rocky-linux/image-builder?distro=rocky-linux-10&epoch=0

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0:52.1-1.el10_2.2.rocky.0.1

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    RLSA-2026:65534 | CVE-DB