Red Hat Product Errata RHSA-2026:33743 - Security Advisory Issued: 2026-06-30 Updated: 2026-06-30 RHSA-2026:33743 - Security Advisory Overview Updated Packages Synopsis Important: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Important 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 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): kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216) kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984) kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189) Bug Fix(es) and Enhancement(s): [RHEL 8.10.z] Add an .sbat section to the x86 kernel (JIRA:RHEL-182788) Incorrect message "NFS: Server wrote zero bytes" is shown in the logs (JIRA:RHEL-147665) 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 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 - 2440630 - CVE-2026-23216 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() BZ - 2481922 - CVE-2026-45984 kernel: gfs2: Fix use-after-free in iomap inline data write path BZ - 2482588 - CVE-2026-46189 kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path CVEs CVE-2026-23216 CVE-2026-45984 CVE-2026-46189 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. 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Red Hat Enterprise Linux for x86_64 8 SRPM kernel-4.18.0-553.139.1.el8_10.src.rpm SHA-256: f1fcb6e4bf72265f8071b6aacf4ee3347a8644a6f7d9ed7f685247c003c427f7 x86_64 bpftool-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: a1c643651f0230229d646fbc232bb8925f7dfad811ac5afac97fddd814834b0a bpftool-debuginfo-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 904e1c22da489d6ea1b7ddcf5d32084117efc43d170c099241c4d3d438670c35 kernel-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: faa84639abff9495d346552fcb9a008ac04a930ef38239fd43dd0353d349ae92 kernel-abi-stablelists-4.18.0-553.139.1.el8_10.noarch.rpm SHA-256: fc1f9f47c6fba35c4b177925d11db98ffba3a993d2bf567dfeeeca47c6f7e6d7 kernel-core-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 3329732d88b0a6d768460cc6c2fc992fddbb41b30bdc1dca876155f10dd9ff92 kernel-cross-headers-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: cbe75711959222a4a66637125448d7cfd4ace47128a92dceef92177ff1753cff kernel-debug-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 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kernel-devel-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 3e5bcc013b35a756f6780d71cac65561e698f2c4acd15370722dc7fa65529b1e kernel-doc-4.18.0-553.139.1.el8_10.noarch.rpm SHA-256: e50a39df5a04792e7728a83666f44786ee7b5b78c7c12d24fb8f404374e453e7 kernel-headers-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 74be535cecdd000a665b173abf7e70317ba3ca67fa0f489e6e61d826a117ca35 kernel-modules-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: adf5d53f56814404c15f3830d5aa142adbe7d5033ff3436abe80f442b778c1d3 kernel-modules-extra-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: d8790c7f4aa09b475feaa7c4b184e190e6754983f73417a62c48157d467212c6 kernel-tools-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: c037fdd6931381f0cc1156c69ab461dff3ffd7e3b9b23a4de16b34c97b236329 kernel-tools-debuginfo-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 3235edcd47617f7c2d4cc88f4260f26d0f6feb45c56c8be5c62e9337e8c808f4 kernel-tools-libs-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 8ada4393552b601a8d2d6351dda9d9f2fe371524bb06e9dc959f39ad01c1caf8 perf-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: b0c21be9fbf3bd04c2397a29d3910946d19861deffb2f7b7d729895014b14ec6 perf-debuginfo-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 0c8a3f9c19abe977f57aab99c66ac55dc70800611f0403eb1192735edfb5b5c8 python3-perf-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: 9d324e05ddf31ea10d576e81a031103078c549f5f45a7edf292325192206a579 python3-perf-debuginfo-4.18.0-553.139.1.el8_10.x86_64.rpm SHA-256: fb891e4f00431022063b0eb195faa5c6f30570010135f5fd5af0e9e5b789e572 Red Hat Enterprise Linux for IBM z Systems 8 SRPM kernel-4.18.0-553.139.1.el8_10.src.rpm SHA-256: f1fcb6e4bf72265f8071b6aacf4ee3347a8644a6f7d9ed7f685247c003c427f7 s390x bpftool-4.18.0-553.139.1.el8_10.s390x.rpm SHA-256: aa80914715cd776f6a8873acc54dd15393bb50ae11069308a354c54f23812937 bpftool-debuginfo-4.18.0-553.139.1.el8_10.s390x.rpm SHA-256: 7f12dff951938a1ad9591872fb45d6828d6adba5076f342bc829fde59fc96ee5 kernel-4.18.0-553.139.1.el8_10.s390x.rpm SHA-256: 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