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: Linux kernel: smb: client: reject userspace cifs.spnego descriptions (CVE-2026-46243)
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 | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-core | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-core | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-devel | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules-extra | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-devel | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules | 4.18.0-553.129.1.rt7.470.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules-extra | 4.18.0-553.129.1.rt7.470.el8_10 |
Vulnerabilities 1
-
High 7.1CVE-2026-46243 Public exploit
smb: client: reject userspace cifs.spnego descriptions
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as ke…