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Critical RHSA-2026:95601 3 CVEs

Red Hat Security Advisory: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_161_1 security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 15

ReleasePackageFixed in
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_107_1 0:1-18.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_107_1-debuginfo 0:1-18.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_107_1-debugsource 0:1-18.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_120_1 0:1-17.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_120_1-debuginfo 0:1-17.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_120_1-debugsource 0:1-17.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_130_1 0:1-15.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_130_1-debuginfo 0:1-15.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_130_1-debugsource 0:1-15.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_143_1 0:1-11.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_143_1-debuginfo 0:1-11.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_143_1-debugsource 0:1-11.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_161_1 0:1-4.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_161_1-debuginfo 0:1-4.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kpatch-patch-4_18_0-477_161_1-debugsource 0:1-4.el8_8

Vulnerabilities 3

  • Critical 10.0
    CVE-2026-74705

    udp: fix potential use-after-free in tunnel segmentation

    In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-52923 Public exploit

    ipc: limit next_id allocation to the valid ID range

    In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids->next_id. ipc_idr_alloc() currently forwards that request t…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-81000 Public exploit

    net: tun: bound receive headroom

    In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tun_get_user() uses tun->align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request fro…

    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=2492094
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2521498
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532176
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_95601.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-52923
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-52923
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-52923
  • article
    https://lore.kernel.org/linux-cve-announce/2026062431-CVE-2026-52923-35fb@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-74705
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74705
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74705
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-74705.mbox
  • report
    https://access.redhat.com/security/cve/CVE-2026-81000
  • article
    https://access.redhat.com/security/vulnerabilities/RHSB-2026-011
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-81000
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-81000
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81000.mbox