Red Hat Product Errata RHSA-2026:54246 - Security Advisory Issued: 2026-08-12 Updated: 2026-08-12 RHSA-2026:54246 - Security Advisory Overview Updated Packages Synopsis Moderate: kernel security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems 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 Moderate. 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): kernel: udf: fix partition descriptor append bookkeeping (CVE-2026-45991) kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009) 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. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Affected Products Red Hat Enterprise Linux for x86_64 8 x86_64 Red Hat Enterprise Linux for IBM z Systems 8 s390x Red Hat Enterprise Linux for Power, little endian 8 ppc64le Red Hat Enterprise Linux for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for x86_64 8 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le Red Hat CodeReady Linux Builder for ARM 64 8 aarch64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x Fixes BZ - 2482113 - CVE-2026-45991 kernel: udf: fix partition descriptor append bookkeeping BZ - 2492390 - CVE-2026-53009 kernel: ice: fix double-free of tx_buf skb CVEs CVE-2026-45991 CVE-2026-53009 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 8 SRPM kernel-4.18.0-553.155.1.el8_10.src.rpm SHA-256: 974eab9003a856bfb2e3f429f611296075b1f83c52265be8d10c184a73444733 x86_64 bpftool-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 937ca58c6ca14fa538f535d1447d22bbe30782c149b6dba428850c3d9e715e57 bpftool-debuginfo-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 5c1c0cbf848d60c969a194bfdb60a38adc128dbf960c2c51cfca24487da1757e kernel-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: edc7f9a615ff1db69abbc8459d1431374944925a37cd68a0ce63c6268f6c2c8b kernel-abi-stablelists-4.18.0-553.155.1.el8_10.noarch.rpm SHA-256: 89b4073683d190dedcc979b6d7a23d9fcd1b1c6e1e4881139efbeaefe2f4cf65 kernel-core-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: add3a14d98cf743b47adcee0ae4ab070c5c457b0cf871e357580c7e50292f443 kernel-cross-headers-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: dd2474b7ed8944f8c34a72c80ecb5e93f1f0a4933868c77133ddfb7633043640 kernel-debug-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 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perf-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 29ea3028122b1c6913ce532c756ff490dbc4dad108cea2554005cb57464e2985 perf-debuginfo-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 57448b2646a2c79c7eee1447c7e2ac1d94b13b3aceab9f76c13fde3e18baa723 python3-perf-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: 70266f867d172c3ed7f14adbdf4ee392d661d61cb0d9f00a4a25249acfe32a80 python3-perf-debuginfo-4.18.0-553.155.1.el8_10.x86_64.rpm SHA-256: f4f42f8c4ed7c568f620edb5c7ab0300281aa5f48f3e42d00d3c5ff4b19ea14c Red Hat Enterprise Linux for IBM z Systems 8 SRPM kernel-4.18.0-553.155.1.el8_10.src.rpm SHA-256: 974eab9003a856bfb2e3f429f611296075b1f83c52265be8d10c184a73444733 s390x bpftool-4.18.0-553.155.1.el8_10.s390x.rpm SHA-256: 2ff16a4f48c3c118345fd6dbeb3ce6d7e6edc4e437f0bc04ebcf45b0d740130e bpftool-debuginfo-4.18.0-553.155.1.el8_10.s390x.rpm SHA-256: 41baaa177e6396160c7dc745e11418c14043530aceb8619e10e61f04c9554c75 kernel-4.18.0-553.155.1.el8_10.s390x.rpm SHA-256: 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