Red Hat Security Advisory: kernel security update

Fixed packages 92

Vulnerabilities 8

• Critical 9.8
  CVE-2026-72221

  sunrpc: wait for in-flight TLS handshake callback when cancel loses race

  In the Linux kernel, the following vulnerability has been resolved: sunrpc: wait for in-flight TLS handshake callback when cancel loses race When wait_for_completion_interruptible_timeout() in svc_tcp_handshake() returns 0 (timeout) or -ERESTARTSYS (signal) a…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 15, 2026
• Critical 9.8
  CVE-2026-72222

  sunrpc: pin svc_xprt across the asynchronous TLS handshake callback

  In the Linux kernel, the following vulnerability has been resolved: sunrpc: pin svc_xprt across the asynchronous TLS handshake callback svc_tcp_handshake() stores the raw svc_xprt pointer in tls_handshake_args.ta_data and submits the request through tls_serve…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 15, 2026
• Critical 9.8
  CVE-2026-74586 Public exploit

  sctp: clear new_transport when removing a peer

  In the Linux kernel, the following vulnerability has been resolved: sctp: clear new_transport when removing a peer sctp_process_asconf_param() stores a newly added peer transport in asoc->new_transport. After all parameters in the ASCONF chunk have been proce…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Aug 22, 2026
• High 7.8
  CVE-2026-64378

  writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs()

  In the Linux kernel, the following vulnerability has been resolved: writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() When a container exits, the following BUG_ON() is occasionally triggered: ========================================…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 25, 2026
• High 7.8
  CVE-2026-72080

  fs/resctrl: Fix use-after-free during unmount

  In the Linux kernel, the following vulnerability has been resolved: fs/resctrl: Fix use-after-free during unmount During unmount or failure teardown all mon_data structures that contain monitoring event file private data are freed after which kernfs nodes are…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Aug 15, 2026
• High 7.8
  CVE-2026-89488

  openvswitch: Fix CT limit teardown use-after-free

  In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovs_mutex. The CT limit pointer was neither remo…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 11, 2026
• High 7.8
  CVE-2026-98974

  xfs: fix exchange-range-to-eof file size exchange

  In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchange-range-to-eof file size exchange Norbert Szetei posted a patch containing an incomplete description of a bug in XFS_IOC_EXCHANGE_RANGE's TO_EOF flag. The bug tricks exchange-…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Oct 23, 2026
• Unscored —
  CVE-2026-90315

  PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers

  In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers Currently, the legacy I/O and memory sysfs handlers do not check security_locked_down(LOCKDOWN_PCI_ACCESS), leaving the legacy…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Sep 17, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2507296
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2516278
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2516412
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2516674
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2521419
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2532407
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2536264
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2559811
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_95367.json
• report
  https://access.redhat.com/security/cve/CVE-2026-64378
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-64378
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-64378
• article
  https://lore.kernel.org/linux-cve-announce/2026072524-CVE-2026-64378-78c8@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-72080
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-72080
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-72080
• article
  https://kernelcve.org/list/?q=CVE-2026-72080
• article
  https://lore.kernel.org/linux-cve-announce/2026081521-CVE-2026-72080-751c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-72221
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-72221
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-72221
• article
  https://lore.kernel.org/linux-cve-announce/2026081547-CVE-2026-72221-bbfe@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-72222
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-72222
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-72222
• article
  https://lore.kernel.org/linux-cve-announce/2026081547-CVE-2026-72222-8ff1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-74586
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-74586
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-74586
• article
  https://lore.kernel.org/linux-cve-announce/2026082212-CVE-2026-74586-9beb@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2026-89488
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-89488
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-89488
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89488.mbox
• report
  https://access.redhat.com/security/cve/CVE-2026-90315
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-90315
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-90315
• article
  https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90315.mbox