ESB-2026.4635

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4635 kernel security update 6 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2025-40252 CVE-2025-68724 CVE-2026-31402 CVE-2024-41073 CVE-2026-31431 CVE-2026-23401 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:13577 Comment: CVSS (Max): 8.1 CVE-2026-23401 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H The following are listed in the CISA Known Exploited Vulnerabilities (KEV) Catalog: CISA KEV CVE(s): CVE-2026-31431 CISA KEV URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog EPSS (Max): 4.0% (88th) CVE-2026-31431 2026-05-04 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:13577 - Security Advisory Issued: 2026-05-05 Updated: 2026-05-05 Synopsis Kernel security update Type/Severity Security Advisory: Important Topic An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): o kernel: nvme: avoid double free special payload (CVE-2024-41073) o kernel: net: qlogic/qede: fix potential out-of-bounds read in qede_tpa_cont () and qede_tpa_end() (CVE-2025-40252) o kernel: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id (CVE-2025-68724) o kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) o kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) o kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Affected Products o Red Hat Enterprise Linux for x86_64 8 x86_64 o Red Hat Enterprise Linux for IBM z Systems 8 s390x o Red Hat Enterprise Linux for Power, little endian 8 ppc64le o Red Hat Enterprise Linux for ARM 64 8 aarch64 o Red Hat CodeReady Linux Builder for x86_64 8 x86_64 o Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le o Red Hat CodeReady Linux Builder for ARM 64 8 aarch64 o Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 o Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 o Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le o Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x Fixes o BZ - 2301637 - CVE-2024-41073 kernel: nvme: avoid double free special payload o BZ - 2424886 - CVE-2025-68724 kernel: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id o BZ - 2453803 - CVE-2026-23401 kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling o BZ - 2454844 - CVE-2026-31402 kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache o BZ - 2460538 - CVE-2026-31431 kernel: crypto: algif_aead - Revert to operating out-of-place CVEs o CVE-2024-41073 o CVE-2025-40252 o CVE-2025-68724 o CVE-2026-23401 o CVE-2026-31402 o CVE-2026-31431 References o https://access.redhat.com/security/updates/classification/#important - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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