Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Fixed packages 91

Vulnerabilities 7

• Critical 9.8
  CVE-2026-74480

  net: bridge: stop fast-leave after deleting a port group

  In the Linux kernel, the following vulnerability has been resolved: net: bridge: stop fast-leave after deleting a port group br_multicast_leave_group() iterates mp->ports with pp = &p->next in its fast-leave path. After br_multicast_del_pg() removes p, contin…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 15, 2026
• Critical 9.8
  CVE-2026-74581

  net: ipv6: clear suppressed fib6 rule result

  In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6_rule_suppress() drops a suppressed route with ip6_rt_put_flags(), but leaves res->rt6 pointing at the released rt6_info. If no later rule sup…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 21, 2026
• High 7.8
  CVE-2026-46120

  ip6_gre: Use cached t->net in ip6erspan_changelink().

  In the Linux kernel, the following vulnerability has been resolved: ip6_gre: Use cached t->net in ip6erspan_changelink(). After commit 5e72ce3e3980 ("net: ipv6: Use link netns in newlink() of rtnl_link_ops"), ip6erspan_newlink() correctly resolves the per-net…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• High 7.8
  CVE-2026-64002

  ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

  In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unr…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Jul 19, 2026
• 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
  Aug 21, 2026
• High 7.1
  CVE-2026-46150

  fanotify: fix false positive on permission events

  In the Linux kernel, the following vulnerability has been resolved: fanotify: fix false positive on permission events fsnotify_get_mark_safe() may return false for a mark on an unrelated group, which results in bypassing the permission check. Fix by skipping …

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  May 28, 2026
• 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
  Jul 4, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482612
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2482614
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2497035
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2502363
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2517046
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2519475
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2520980
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_62609.json
• report
  https://access.redhat.com/security/cve/CVE-2026-46120
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46120
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46120
• article
  https://lore.kernel.org/linux-cve-announce/2026052815-CVE-2026-46120-1a01@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-46150
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-46150
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-46150
• article
  https://lore.kernel.org/linux-cve-announce/2026052822-CVE-2026-46150-c96d@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-2026-64002
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-64002
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-64002
• article
  https://lore.kernel.org/linux-cve-announce/2026071907-CVE-2026-64002-b8fe@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-74480
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-74480
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-74480
• article
  https://lore.kernel.org/linux-cve-announce/2026081536-CVE-2026-74480-e620@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-74581
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-74581
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-74581
• article
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6aea62e433fe1b586202a5fee8b5807ce635e1d7
• 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