Linux · Red Hat · Security advisory · October 21, 2026

RHSA-2026:86033: Security update for 72 packages

RHSA-2026:86033, released October 21, 2026, fixes 16 CVEs across 72 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
16
3 rated Critical
Exploited
0
None reported
Highest CVSS
9.8
Base score, 0 to 10
Highest EPSS
0.0079
56th percentile

Priority of the 16 CVEs

Patch now 0 Urgent 3 High 13 Routine 0

Fixed package versions

ProductReleaseFixed in
kernelRHEL 90:5.14.0-687.59.1.el9_8
kernel-64kRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debugRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-devel-matchedRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-debug-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-devel-matchedRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-64k-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-abi-stablelistsRHEL 90:5.14.0-687.59.1.el9_8
kernel-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-debugRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-devel-matchedRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-debug-uki-virtRHEL 90:5.14.0-687.59.1.el9_8
kernel-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-devel-matchedRHEL 90:5.14.0-687.59.1.el9_8
kernel-docRHEL 90:5.14.0-687.59.1.el9_8
kernel-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-rtRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64kRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debugRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debug-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debug-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debug-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debug-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-debug-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-64k-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debugRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debug-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debug-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debug-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debug-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-debug-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-rt-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
kernel-toolsRHEL 90:5.14.0-687.59.1.el9_8
kernel-tools-libsRHEL 90:5.14.0-687.59.1.el9_8
kernel-tools-libs-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-uki-virtRHEL 90:5.14.0-687.59.1.el9_8
kernel-uki-virt-addonsRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdumpRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-develRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-devel-matchedRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-modulesRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-modules-coreRHEL 90:5.14.0-687.59.1.el9_8
kernel-zfcpdump-modules-extraRHEL 90:5.14.0-687.59.1.el9_8
libperfRHEL 90:5.14.0-687.59.1.el9_8
perfRHEL 90:5.14.0-687.59.1.el9_8
python3-perfRHEL 90:5.14.0-687.59.1.el9_8
rtlaRHEL 90:5.14.0-687.59.1.el9_8
rvRHEL 90:5.14.0-687.59.1.el9_8

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Urgent CVE-2026-99999 ipv4: validate checksum_start before completing checksum9.3 0.0079 None reported
Urgent CVE-2026-89633 linux: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB read/write from unvalidated...9.8 0.0055 None reported
Urgent CVE-2026-63974 Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close9.8 0.0035 None reported
High CVE-2026-80590 inet: frags: strip GSO state from fragments before reassembly8.8 0.0058 None reported
High CVE-2026-64024 kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system9.4 0.0031 None reported
High CVE-2026-74509 Bluetooth: hci_sync: Fix advertising data UAFs8.8 0.0025 None reported
High CVE-2026-64572 ipv4: fib: free fib_alias with kfree_rcu() on insert error path8.8 0.0020 None reported
High CVE-2026-98260 exec: Cleanup POSIX timers right after de_thread()8.8 0.0019 None reported
High CVE-2026-63899 kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system8.8 0.0018 None reported
High CVE-2026-63956 kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system7.8 0.0017 None reported
High CVE-2026-63962 usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes()8.8 0.0016 None reported
High CVE-2026-64114 kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system8.8 0.0014 None reported
High CVE-2026-64032 kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system8.8 0.0013 None reported
High CVE-2026-31678 openvswitch: defer tunnel netdev_put to RCU release8.8 0.0013 None reported
High CVE-2026-93817 perf: Fix addr_filter_ranges lifetime8.8 0.0013 None reported
High CVE-2026-52935 xfrm: espintcp: do not reuse an in-progress partial send8.8 0.0010 None reported
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