ESB-2026.4726

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4726 kernel-rt security update 7 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-23097 CVE-2026-31402 CVE-2026-23191 CVE-2026-23193 CVE-2024-41073 CVE-2026-31431 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:14301 Comment: CVSS (Max): 7.8 CVE-2026-31431 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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:L/PR:L/UI:N/S:U/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): 1.2% (79th) CVE-2026-31431 2026-05-06 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:14301 - Security Advisory Issued: 2026-05-06 Updated: 2026-05-06 Synopsis Kernel-rt security update Type/Severity Security Advisory: Important Topic An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): o kernel: nvme: avoid double free special payload (CVE-2024-41073) o kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration (CVE-2026-23097) o kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) o kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191) o kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) 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 - Update Services for SAP Solutions 9.2 x86_64 o Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64 Fixes o BZ - 2301637 - CVE-2024-41073 kernel: nvme: avoid double free special payload o BZ - 2436802 - CVE-2026-23097 kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration o BZ - 2439887 - CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() o BZ - 2439947 - CVE-2026-23191 kernel: ALSA: aloop: Fix racy access at PCM trigger 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-2026-23097 o CVE-2026-23191 o CVE-2026-23193 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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