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OpenAdvisories
High RHSA-2026:63537 1 CVE

Red Hat Security Advisory: kernel security update

Published Sep 4, 2026 · Updated Oct 17, 2026

Ecosystem: Red Hat

Fixed packages 49

ReleasePackageFixed in
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos bpftool 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos bpftool-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-abi-stablelists 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-core 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-core 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-devel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-modules 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-modules-extra 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo-common-ppc64le 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo-common-x86_64 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-devel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-doc 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-modules 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-modules-extra 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools-libs 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos perf 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos perf-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos python3-perf 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos python3-perf-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos bpftool 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos bpftool-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-abi-stablelists 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-core 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-core 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-devel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-modules 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-modules-extra 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debuginfo-common-x86_64 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-devel 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-doc 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-modules 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-modules-extra 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools-libs 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos perf 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos perf-debuginfo 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos python3-perf 0:4.18.0-477.165.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos python3-perf-debuginfo 0:4.18.0-477.165.1.el8_8

Vulnerabilities 1

  • High 7.8
    CVE-2026-74582

    packet: use consistent hard_header_len in non-ring send paths

    In the Linux kernel, the following vulnerability has been resolved: packet: use consistent hard_header_len in non-ring send paths packet_snd() reads dev->hard_header_len multiple times while allocating and constructing an skb. Device reconfiguration can chang…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2519475
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_63537.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-74582
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74582
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74582
  • article
    https://lore.kernel.org/linux-cve-announce/2026082100-CVE-2026-74582-3296@gregkh/T