Linux · Security advisory · October 27, 2026
RHSA-2026:89083: Security update for 23 packages
RHSA-2026:89083, released October 27, 2026, fixes 13 CVEs across 23 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
13
3 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0079
56th percentile
Priority of the 13 CVEs
Patch now 0
Urgent 3
High 10
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| bpftool | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-abi-stablelists | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-core | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-debug | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-debug-core | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-debug-devel | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-debug-modules | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-debug-modules-extra | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-devel | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-doc | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-modules | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-modules-extra | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-tools | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-tools-libs | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-tools-libs-devel | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-zfcpdump | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-zfcpdump-core | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-zfcpdump-devel | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-zfcpdump-modules | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| kernel-zfcpdump-modules-extra | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| perf | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
| python3-perf | RHEL 8 | 0:4.18.0-553.178.1.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-99999 | ipv4: validate checksum_start before completing checksum | 9.3 | 0.0079 | None reported | |
| Urgent | CVE-2026-68476 | linux: In the Linux kernel, the following vulnerability has been resolved: ipvs: reload ip header after head reallocation... | 9.8 | 0.0071 | None reported | |
| Urgent | CVE-2026-68140 | net/iucv: fix use-after-free of a severed iucv_path | 9.8 | 0.0028 | None reported | |
| High | CVE-2026-68136 | net: gro: fix double aggregation of flush-marked skbs | 9.8 | 0.0054 | None reported | |
| High | CVE-2026-80586 | mptcp: options: reset DSS fields in case of unexpected size | 9.8 | 0.0040 | None reported | |
| High | CVE-2026-81003 | linux: In the Linux kernel, the following vulnerability has been resolved: net/iucv: filter frames in afiucv_hs_rcv() by in... | 8.8 | 0.0031 | None reported | |
| High | CVE-2026-68138 | net/sched: serialize qdisc_rtab_list against concurrent get/put | 8.8 | 0.0022 | None reported | |
| High | CVE-2026-80824 | usb: usbfs: fix use-after-free of usb_device in usbdev_release() | 8.8 | 0.0020 | None reported | |
| High | CVE-2026-89638 | smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions | 8.8 | 0.0018 | None reported | |
| High | CVE-2026-68338 | net/packet: avoid fanout hook re-registration after unregister | 8.8 | 0.0014 | None reported | |
| High | CVE-2026-53388 | fuse: re-lock request before replacing page cache folio | 8.8 | 0.0013 | None reported | |
| High | CVE-2026-53236 | tcp: restrict SO_ATTACH_FILTER to priv users | 8.8 | 0.0013 | None reported | |
| High | CVE-2026-64378 | writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() | 8.8 | 0.0010 | None reported |
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