RHSA-2026:62409HighCVSS 8.1

Red Hat Security Advisory: OpenShift Container Platform 4.14.73 bug fix and security update

Published
September 14, 2026
Last Modified
September 30, 2026

🔗 CVE IDs covered (9)

CVE-2026-6893 →CVE-2026-14164 →CVE-2026-29111 →CVE-2026-42010 →CVE-2026-43112 →CVE-2026-3012 →CVE-2026-15816 →CVE-2026-2340 →CVE-2026-3833 →

📋 Description

CVE-2026-2340 — samba: vfs_worm does not block directory modification CVE-2026-3012 — samba: group policy certificate enrollment uses http:// without validation CVE-2026-3833 — gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison CVE-2026-6893 — dracut: dracut: Root code execution via DHCP options command injection CVE-2026-14164 — libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack() CVE-2026-15816 — dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die() CVE-2026-29111 — systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data CVE-2026-42010 — gnutls: gnutls: Authentication Bypass via NUL Character in Username CVE-2026-43112 — kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath

🎯 Affected products5

  • Red Hat OpenShift Container Platform 4.14
  • rhcos-aarch64-414.92.202609011250-0 as a component of Red Hat OpenShift Container Platform 4.14
  • rhcos-ppc64le-414.92.202609011250-0 as a component of Red Hat OpenShift Container Platform 4.14
  • rhcos-s390x-414.92.202609011250-0 as a component of Red Hat OpenShift Container Platform 4.14
  • rhcos-x86_64-414.92.202609011250-0 as a component of Red Hat OpenShift Container Platform 4.14

✅ Remediation

For OpenShift Container Platform 4.14 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.14/html/release_notes/ You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags. The sha values for the release are as follows: (For x86_64 architecture) The image digest is sha256:7f1b9c23113bc7bdb125576cd84817bcca701055b76452149676770a301c8b32 (For s390x architecture) The image digest is sha256:31179cd8edb0e05a0e297b2e2a4d47b4beab9c6d1e9753a1cbda1bd8e33d8cbd (For ppc64le architecture) The image digest is sha256:6dbedd53d65b4d9cc7973f6d28a9eb905cda5af6c1ebea7a28670c1351977107 (For aarch64 architecture) The image digest is sha256:590c3eaa971d87b59542a8b3f65e20382bf4a140d139e0a6028f7295fcedf194 All OpenShift Container Platform 4.14 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.14/html-single/updating_clusters/index#updating-cluster-cli. Workaround: Administrators can mitigate this issue by: Setting read-only permissions on protected files at the underlying filesystem level will prevent modifications. Configuring ```worm:grace_period = 0``` (zero or less) in smb.conf will eliminate the writable grace period (will eliminate the window in which the rename can happen), understanding that this may impact workflows requiring multi-step file creation. Workaround: Systems are not affected unless Samba Group Policy processing and certificate auto-enrollment are explicitly enabled. Administrators can reduce exposure by: Avoiding unnecessary use of certificate auto-enrollment. Ensuring your "smb.conf" does not contain a line like ```apply group policies = yes```. If , group policy is not be enabled, the vulnerable code will not run. Intercepting the HTTP request requires some control over the local network or other devices to intercept or redirect traffic. Some network administrators might assess this as a low risk on their networks. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: To mitigate this issue, ensure that systems configured to obtain network settings via DHCP in the initramfs are only booted on trusted networks. This vulnerability requires an attacker to control a DHCP server on the adjacent network segment. If network configuration via DHCP is not strictly necessary during the initramfs phase, consider using static network configuration. Workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the appropriate security update once it becomes available. Workaround: Restrict DHCP server access on networks used for network boot (DHCP snooping, dedicated/trusted provisioning VLANs) until a fix is available. Workaround: To mitigate this issue, prevent the `cifs` kernel module from loading if CIFS client functionality is not required. This can be achieved by blacklisting the module. Create a file named `/etc/modprobe.d/blacklist-cifs.conf` with the following content: ``` blacklist cifs ``` After creating the file, regenerate the initramfs and reboot the system for the changes to take effect. ```bash dracut -f -v reboot ``` Disabling the `cifs` module will prevent the system from mounting CIFS network shares, which may impact functionality relying on this protocol.

🔗 References (12)