Linux · Security advisory · May 27, 2026
RHSA-2026:19664: Security update for 12 packages
RHSA-2026:19664, released May 27, 2026, fixes 3 CVEs across 12 products. One of them is being exploited (CVE-2026-46300); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEV
CVEs closed
3
None rated Critical
Exploited
1
CVE-2026-46300
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.1613
96th percentile
Priority of the 3 CVEs
Patch now 1
Urgent 0
High 2
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| kernel-rt | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-core | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug-core | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug-devel | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug-kvm | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug-modules | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-debug-modules-extra | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-devel | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-kvm | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-modules | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
| kernel-rt-modules-extra | RHEL 8 | 0:4.18.0-553.125.1.rt7.466.el8_10 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2026-46300 | net: skbuff: preserve shared-frag marker during coalescing | 8.1 | 0.1613 | KEVExploited | |
| High | CVE-2026-46333 | ptrace: slightly saner 'get_dumpable()' logic | 8.1 | 0.0430 | None reported | |
| High | CVE-2026-43503 | net: skbuff: propagate shared-frag marker through frag-transfer helpers | 8.8 | 0.0199 | None reported |
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