Summary
The kernel packages contain the Linux kernel, the core of any Linux operating system.
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 25
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | bpftool | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-abi-stablelists | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-core | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-cross-headers | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-debug | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-debug-core | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-debug-devel | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-debug-modules | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-debug-modules-extra | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-devel | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-doc | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-headers | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-modules | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-modules-extra | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-tools | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-tools-libs | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-tools-libs-devel | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-zfcpdump | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-zfcpdump-core | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-zfcpdump-devel | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-zfcpdump-modules | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | kernel-zfcpdump-modules-extra | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | perf | 4.18.0-553.129.1.el8_10 |
| AlmaLinux · 8 | python3-perf | 4.18.0-553.129.1.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…