Linux · Security advisory · October 20, 2026
RHSA-2026:85774: Security update for 12 packages
RHSA-2026:85774, released October 20, 2026, fixes 9 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
9
3 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0052
44th percentile
Priority of the 9 CVEs
Patch now 0
Urgent 3
High 6
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| kernel-rt | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-core | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug-core | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug-devel | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug-kvm | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug-modules | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-debug-modules-extra | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-devel | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-kvm | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-modules | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
| kernel-rt-modules-extra | RHEL 8 | 0:4.18.0-553.176.1.rt7.517.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-89479 | sctp: stop processing a packet once its association is deleted | 9.8 | 0.0050 | None reported | |
| Urgent | CVE-2026-89631 | smb: client: reject a tree connect response whose byte count is too small | 9.1 | 0.0049 | None reported | |
| Urgent | CVE-2026-98320 | netfilter: flowtable: hold reference on ct until flow is released | 9.8 | 0.0014 | None reported | |
| High | CVE-2026-74752 | sctp: validate cookie AUTH state before use | 9.8 | 0.0052 | None reported | |
| High | CVE-2026-74588 | sctp: keep chunk->transport in step with the list it is queued on | 9.8 | 0.0050 | None reported | |
| High | CVE-2026-53196 | USB: serial: io_ti: fix heap overflow in get_manuf_info() | 8.8 | 0.0027 | None reported | |
| High | CVE-2026-93288 | netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state | 8.8 | 0.0013 | None reported | |
| High | CVE-2026-93817 | perf: Fix addr_filter_ranges lifetime | 8.8 | 0.0013 | None reported | |
| High | CVE-2026-52935 | xfrm: espintcp: do not reuse an in-progress partial send | 8.8 | 0.0010 | None reported |
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