Summary
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period (CVE-2026-98432)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | kernel-rt | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-core | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-core | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-devel | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules-extra | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-devel | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules | 4.18.0-553.182.1.rt7.523.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules-extra | 4.18.0-553.182.1.rt7.523.el8_10 |
Vulnerabilities 1
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Critical 9.8CVE-2026-98432 Public exploit
ipv4: free inet_opt and ireq_opt after an RCU grace period
In the Linux kernel, the following vulnerability has been resolved: ipv4: free inet_opt and ireq_opt after an RCU grace period tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without copying it. Another cpu…