Threat database

The libxml2 library is a development toolbox providing the implementation of various XML standards. Security Fix(es): * libxml2: libxml2: Arbitrary code execution in xmlcatalog utility via buffer overflow (CVE-2026-11979) 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.

CVE-2026-73501 is a high-severity vulnerability in the golang-github-getkin-kin-openapi package affecting certain versions prior to 0.144.0. The issue involves the ValidationHandler.Load() function in openapi3filter/validation_handler.go silently replacing a nil AuthenticationFunc, which could lead to security risks. Red Hat has issued an advisory addressing this and other vulnerabilities in related packages, providing updated RPMs to remediate the issues.

A use-after-free vulnerability (CVE-2026-74581) exists in the Linux kernel's IPv6 networking code, specifically in fib6_rule_suppress due to a stale pointer. This vulnerability affects various Red Hat Enterprise Linux kernel versions. A security update addressing this issue is available and should be applied with a system reboot. The vulnerability is rated as high severity by Red Hat Product Security.

A medium severity vulnerability (CVE-2026-3446) was found in the Python base64 module used in Red Hat Hardened Images RPMs. The flaw causes base64 decoding functions to stop prematurely at the first padding character, leading to incomplete data processing and potential data integrity issues. Red Hat has issued updates for python3.12 packages to address this issue.

Red Hat Advanced Cluster Management for Kubernetes versions 2.16.0 through 2.16.4 contain multiple security vulnerabilities that have been addressed in the 2.16.4 update. The update includes security fixes, bug fixes, and enhancements. The overall security impact is rated as important with a high severity level. Users should apply this update after ensuring all previous relevant errata are applied. No specific CVSS scores are provided for the individual vulnerabilities.

### Impact When following cross-origin redirects for requests made using urllib3’s high-level APIs, such as `urllib3.request()`, `PoolManager.request()`, and `ProxyManager.request()`, sensitive headers — `Authorization`, `Cookie`, and `Proxy-Authorization` (defined in `Retry.DEFAULT_REMOVE_HEADERS_ON_REDIRECT`) — are stripped by default, as expected. However, cross-origin redirects followed from the low-level API via `ProxyManager.connection_from_url().urlopen(..., assert_same_host=False)` still forward these sensitive headers. ### Affected usage Applications and libraries using urllib3 versions earlier than 2.7.0 may be affected if they allow cross-origin redirects while making requests through `HTTPConnection.urlopen()` instances created via `ProxyManager.connection_from_url()`. ### Remediation Upgrade to urllib3 version 2.7.0 or later, in which sensitive headers are stripped from redirects followed by `HTTPConnection`. If upgrading is not immediately possible, avoid using this low-level redirect flow for cross-origin redirects. If appropriate for your use case, switch to `ProxyManager.request()`.

A critical path traversal and arbitrary file overwrite vulnerability exists in Argo Workflows within Red Hat OpenShift AI 3.5. An attacker with workflow submission privileges can submit a malicious archive containing symbolic links that bypass extraction directory restrictions, allowing overwriting of files inside the workflow pod. This can lead to arbitrary command execution during pod startup. The impact is limited to the compromised pod and does not affect the host system. Currently, no official fix or mitigation meeting Red Hat's deployment or stability standards is available.

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.19.44. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2026:57401 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/ Security Fix(es): * kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518) * gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment (CVE-2026-33845) * gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846) * vim: arbitrary command execution via modeline sandbox bypass (CVE-2026-34982) * kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CVE-2026-43112) * gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison (CVE-2026-3833) * systemd: systemd: Arbitrary code execution or Denial of Service via spurious IPC API call data (CVE-2026-29111) * vim: zip.vim: Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass (CVE-2026-35177) * vim: Vim: Command injection allows arbitrary code execution via malicious tag files (CVE-2026-41411) * vim: command injection when decompressing .tgz archives (CVE-2026-46483) * libsolv: Heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data (CVE-2026-48864) 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. All OpenShift Container Platform 4.19 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/4.19/html-single/updating_clusters/index#updating-cluster-cli.

CVE-2026-44222 is a denial of service vulnerability in vLLM, an inference engine for large language models, as integrated into Red Hat AI Inference Server 3.3.6 (Spyre). Unauthenticated attackers can cause worker termination by submitting malformed multimodal inputs or text prompts with special tokens, disrupting AI inference workloads. No fix is currently available that meets Red Hat's criteria for deployment and stability.

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.18.54. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2026:57482 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/ Security Fix(es): * samba: Missing access check on reparse point operations (CVE-2026-1933) * samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012) * samba: Remote Code Execution in SAMR (CVE-2026-4408) * sssd: sssd: sudo LDAP provider searches entire directory tree for sudoRole objects by default, enabling privilege escalation (CVE-2026-14474) * gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment (CVE-2026-33845) * gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846) * vim: arbitrary command execution via modeline sandbox bypass (CVE-2026-34982) * gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability (CVE-2026-42009) * gnutls: gnutls: Authentication Bypass via NUL Character in Username (CVE-2026-42010) * kernel: net: openvswitch: reject oversized nested action attrs (CVE-2026-64531) * samba: vfs_worm does not block directory modification (CVE-2026-2340) * gnutls: gnutls: Information disclosure via heap overread in RSA key exchange (CVE-2026-5260) * glibc: glibc: Heap Buffer Overflow in `scanf` with `%mc` format specifier and large width (CVE-2026-5450) * sssd: sssd: GPO cache path traversal via unsanitized gPCFileSysPath allows Kerberos authentication bypass (CVE-2026-14476) * vim: zip.vim: Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass (CVE-2026-35177) * vim: Vim: Command injection allows arbitrary code execution via malicious tag files (CVE-2026-41411) * gnutls: gnutls: Security bypass due to incorrect name constraint handling (CVE-2026-42011) * gnutls: gnutls: Certificate validation bypass due to oversized Subject Alternative Name (CVE-2026-42013) * vim: command injection when decompressing .tgz archives (CVE-2026-46483) * libsolv: Heap buffer overflow in libsolv repopagestore via unchecked decompression of malicious .solv page data (CVE-2026-48864) 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. All OpenShift Container Platform 4.18 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/4.18/html-single/updating_clusters/index#updating-cluster-cli.

This security update provides a functional equivalent of RHSA-2026:58563. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2026:58563.

The attr packages provide extended attributes, which can be used to store system objects like capabilities of executables and access control lists, as well as user objects. Security Fix(es): * attr: Symlink Traversal Privilege Escalation via getfattr and setfattr (CVE-2026-54371) 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.

A use-after-free vulnerability in the rtpsbcdepay plugin of the gstreamer1-plugins-good package for Red Hat Enterprise Linux 10 allows remote code execution. This security flaw is addressed by an update provided by Red Hat. The vulnerability is rated as having high severity by Red Hat Product Security. The issue affects multiple architectures and variants of Red Hat Enterprise Linux 10. Users are advised to apply the official security update to remediate the vulnerability.

Multiple security vulnerabilities in the Linux kernel were addressed in a Red Hat security advisory. The fixes cover a range of kernel subsystems including memory management, networking, input devices, and netfilter components. These vulnerabilities include use-after-free, out-of-bounds read, race conditions, and improper handling of network packets. The advisory also includes various bug fixes and enhancements. A patch is available to remediate these issues.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924) * kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886) * kernel: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check (CVE-2026-63913) * kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191) * kernel: netfilter: ipset: fix race between dump and ip_set_list resize (CVE-2026-64189) * kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page (CVE-2026-64320) * kernel: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count (CVE-2026-64277) * kernel: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count (CVE-2026-64276) Bug Fix(es) and Enhancement(s): * ss core dumped when there is an SCTP session [rhel-8.10.z] (JIRA:RHEL-212400) * SELinux TCP/MPTCP connect check bypass via TCP Fast Open [rhel-8.10.z] (JIRA:RHEL-222800) * [RHEL-RT] usb_hub_wq items may run on isolated+nohz_full cores (JIRA:RHEL-178088) 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.