Red Hat Product Errata RHSA-2026:59473 - Security Advisory Issued: 2026-08-25 Updated: 2026-08-25 RHSA-2026:59473 - 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 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. 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: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CVE-2026-31411) kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051) kernel: selinux: fix overlayfs mmap() and mprotect() access checks (CVE-2026-46054) kernel: crypto: ccp - copy IV using skcipher ivsize (CVE-2026-53016) kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888) Bug Fix(es) and Enhancement(s): vhost: reset the vring metadata cache on vring reconfiguration (JIRA:RHEL-224604) 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 - Extended Life Cycle Long Life 8.6 x86_64 Red Hat Enterprise Linux Server - AUS 8.6 x86_64 Fixes BZ - 2456521 - CVE-2026-31411 kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() BZ - 2464462 - CVE-2026-43051 kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq BZ - 2482025 - CVE-2026-46054 kernel: selinux: fix overlayfs mmap() and mprotect() access checks BZ - 2492269 - CVE-2026-53016 kernel: crypto: ccp - copy IV using skcipher ivsize BZ - 2502443 - CVE-2026-63888 kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() CVEs CVE-2026-31411 CVE-2026-43051 CVE-2026-46054 CVE-2026-53016 CVE-2026-63888 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.6 SRPM kernel-4.18.0-372.208.1.el8_6.src.rpm SHA-256: ac7e34d1d4260f335b7d727e7cd6231ad30e9fdb8f63ebb8872ade9fc122a202 x86_64 bpftool-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 2f0e87763eb70254df177729b9e630048ab187128dca6496eadbb1dc8334b461 bpftool-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 3851c71307190b8053db4fcede071e8ebf474f4803cf39957c71ea3ad2edd38a kernel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: e404ebe997cb9e6d367e232bdc75daa7d565ce72375f2c1b19f2fcc691924830 kernel-abi-stablelists-4.18.0-372.208.1.el8_6.noarch.rpm SHA-256: 4227e6658b3ccfd6e211ad4dc4ba840849cafb821c73ef7d5988e7a5083fbc24 kernel-core-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 6b7fc6f9d6769b95f87efbc2662cb9ae87b09ebad071fc1403aaf3ca7bf622b0 kernel-cross-headers-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: cee8298fac985380c780f588a43aa9dc4d49f92edb0aedacbe6afa32be2f6565 kernel-debug-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 21d468fc7cb4e285e8f9bf14d29c596a0d7359b3928a6c256fbd079f81562c3e kernel-debug-core-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 1313cfa465566c1587efaef024b91410b486e9fe8ced56d048a6cbb6c9b96125 kernel-debug-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 0cfc97a574de6ee917078a4dc97cf8d3c3437acf8bdc7cc0746ddd7dc9d7f081 kernel-debug-devel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 4838905b439509ab7412709062dfa1c8ad54591fd65ea9c293f6b09f2d79daa0 kernel-debug-modules-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 684cb912d2d4b9a08932261157747e43d88be61617b659a5468013884d6bedc3 kernel-debug-modules-extra-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: cc744457fe5a662bd85ff3d9b5c622ac92d35044b4dc7bb95850904865655b62 kernel-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: c3be1bba7ab61ebb19c3e925e481c8d27085b7874e7736c46216a89a8efab454 kernel-debuginfo-common-x86_64-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 1ce3359f472ad759ac389a0af2d81182a1443b4866d27147e174f202c2b9de6e kernel-devel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: ae64606212670c7f0a4cc27459b751a7192b2801450b99e88932ebc17cfe956e kernel-doc-4.18.0-372.208.1.el8_6.noarch.rpm SHA-256: a8dab8ae293e5f8feac11ff58bbd933364bbbfe0e77442ac16093d83105f6f41 kernel-headers-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 08f5d93471e72b21908ef061ed325f8f74031e3b4a0ef6d58255dfe274560e53 kernel-modules-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 281fb3fac553da2bebb4d42e23ffa54e3e5a748f9054cc8e0e1701af99e9b529 kernel-modules-extra-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 2a08b71daaf14506d1de6d50d7e86396bb4f76b4cb992672156a9b335b79601e kernel-tools-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: ed15045b470e8524635f8dacc0674a9d5e37e61d367be8f7b6fb1849889170ce kernel-tools-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: a912f352ff983680b404d34457a68698592479c86b077183c599f340a98d4218 kernel-tools-libs-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: f74f2f6d14464d732b0bcc9c03cc3a9a6da896cb291913b0d73af6df2ef0108e perf-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 08be64c87bb6431d3e9b660cfba08b099436b83af8df8cb2cfc25e095663d9a3 perf-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 70e067fb2b98c19ebba1a5c27962543021cee1b6d4d621314e56d39634d37a0a python3-perf-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 1b4bc7b9d6835cf712e237a66d43da7234c19330182ef2267d85807991a37712 python3-perf-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: b04b2c7af1d6b99b779a9925385d1ca3aaaa545ae9ea6637751f5f9fd74bb59d Red Hat Enterprise Linux Server - AUS 8.6 SRPM kernel-4.18.0-372.208.1.el8_6.src.rpm SHA-256: ac7e34d1d4260f335b7d727e7cd6231ad30e9fdb8f63ebb8872ade9fc122a202 x86_64 bpftool-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 2f0e87763eb70254df177729b9e630048ab187128dca6496eadbb1dc8334b461 bpftool-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 3851c71307190b8053db4fcede071e8ebf474f4803cf39957c71ea3ad2edd38a kernel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: e404ebe997cb9e6d367e232bdc75daa7d565ce72375f2c1b19f2fcc691924830 kernel-abi-stablelists-4.18.0-372.208.1.el8_6.noarch.rpm SHA-256: 4227e6658b3ccfd6e211ad4dc4ba840849cafb821c73ef7d5988e7a5083fbc24 kernel-core-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 6b7fc6f9d6769b95f87efbc2662cb9ae87b09ebad071fc1403aaf3ca7bf622b0 kernel-cross-headers-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: cee8298fac985380c780f588a43aa9dc4d49f92edb0aedacbe6afa32be2f6565 kernel-debug-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 21d468fc7cb4e285e8f9bf14d29c596a0d7359b3928a6c256fbd079f81562c3e kernel-debug-core-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 1313cfa465566c1587efaef024b91410b486e9fe8ced56d048a6cbb6c9b96125 kernel-debug-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 0cfc97a574de6ee917078a4dc97cf8d3c3437acf8bdc7cc0746ddd7dc9d7f081 kernel-debug-devel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 4838905b439509ab7412709062dfa1c8ad54591fd65ea9c293f6b09f2d79daa0 kernel-debug-modules-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 684cb912d2d4b9a08932261157747e43d88be61617b659a5468013884d6bedc3 kernel-debug-modules-extra-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: cc744457fe5a662bd85ff3d9b5c622ac92d35044b4dc7bb95850904865655b62 kernel-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: c3be1bba7ab61ebb19c3e925e481c8d27085b7874e7736c46216a89a8efab454 kernel-debuginfo-common-x86_64-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 1ce3359f472ad759ac389a0af2d81182a1443b4866d27147e174f202c2b9de6e kernel-devel-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: ae64606212670c7f0a4cc27459b751a7192b2801450b99e88932ebc17cfe956e kernel-doc-4.18.0-372.208.1.el8_6.noarch.rpm SHA-256: a8dab8ae293e5f8feac11ff58bbd933364bbbfe0e77442ac16093d83105f6f41 kernel-headers-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 08f5d93471e72b21908ef061ed325f8f74031e3b4a0ef6d58255dfe274560e53 kernel-modules-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 281fb3fac553da2bebb4d42e23ffa54e3e5a748f9054cc8e0e1701af99e9b529 kernel-modules-extra-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 2a08b71daaf14506d1de6d50d7e86396bb4f76b4cb992672156a9b335b79601e kernel-tools-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: ed15045b470e8524635f8dacc0674a9d5e37e61d367be8f7b6fb1849889170ce kernel-tools-debuginfo-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: a912f352ff983680b404d34457a68698592479c86b077183c599f340a98d4218 kernel-tools-libs-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: f74f2f6d14464d732b0bcc9c03cc3a9a6da896cb291913b0d73af6df2ef0108e perf-4.18.0-372.208.1.el8_6.x86_64.rpm SHA-256: 08be64c87bb6431d3e9b660cfba08b099436b83af8df8cb2cfc25e095663d9a3 perf-debuginfo-