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Critical RHSA-2026:99722 4 CVEs

Red Hat Security Advisory: kpatch-patch-6_12_0-211_16_1 and kpatch-patch-6_12_0-211_49_1 security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 6

ReleasePackageFixed in
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_16_1 0:2-12.el10_2
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_16_1-debuginfo 0:2-12.el10_2
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_16_1-debugsource 0:2-12.el10_2
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_49_1 0:2-4.el10_2
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_49_1-debuginfo 0:2-4.el10_2
Red Hat · RHEL 10.2 EUS enterprise_linux_eus:10.2 kpatch-patch-6_12_0-211_49_1-debugsource 0:2-4.el10_2

Vulnerabilities 4

  • 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 8.8
    CVE-2026-31709

    smb: client: validate the whole DACL before rewriting it in cifsacl

    In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it in cifsacl build_sec_desc() and id_mode_to_cifs_acl() derive a DACL pointer from a server-supplied dacloffset and then use the incomin…

    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
  • High 7.1
    CVE-2026-53361 Public exploit

    af_unix: Set gc_in_progress to true in unix_gc().

    In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thre…

    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=2464476
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2497035
  • 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_99722.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-31709
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31709
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31709
  • article
    https://lore.kernel.org/linux-cve-announce/2026050122-CVE-2026-31709-335b@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-53361
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-53361
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-53361
  • article
    https://lore.kernel.org/linux-cve-announce/2026070436-CVE-2026-53361-f969@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