# RHSA-2026:18134: kernel security update RHSA-2026:18134, released February 4, 2026, fixes 24 CVEs in kernel (version 6.12.0-211.7.1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/fix/linux/rhsa-2026-18134 - Platform: Linux - Released: Feb 4, 2026 - Priority: Urgent (Closes CVE-2025-40320, rated Critical) - CVEs: 24, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://access.redhat.com/errata/RHSA-2026:18134 ## Applies to | Product | Release | Fixed in | |---|---|---| | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-211.7.1.el10_2 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2025-40320](https://patchblox.com/security/data/cve/CVE-2025-40320.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential cfid UAF in smb2_quer... | 9.8 | 0.0042 | | | [CVE-2025-40257](https://patchblox.com/security/data/cve/CVE-2025-40257.md) | High | mptcp: fix a race in mptcp_pm_del_add_timer() | 9.8 | 0.0050 | | | [CVE-2025-40210](https://patchblox.com/security/data/cve/CVE-2025-40210.md) | High | Revert "NFSD: Remove the cap on number of operations per NFSv4 COMPOUND" | 7.5 | 0.0036 | | | [CVE-2025-39866](https://patchblox.com/security/data/cve/CVE-2025-39866.md) | High | fs: writeback: fix use-after-free in __mark_inode_dirty() | 7.8 | 0.0031 | | | [CVE-2024-56633](https://patchblox.com/security/data/cve/CVE-2024-56633.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved: tcp_bpf: Fix the sk_mem_uncharge logic in tcp_bp... | 7.8 | 0.0028 | | | [CVE-2025-38279](https://patchblox.com/security/data/cve/CVE-2025-38279.md) | High | bpf: Do not include stack ptr register in precision backtracking bookkeeping | 7.8 | 0.0024 | | | [CVE-2025-21839](https://patchblox.com/security/data/cve/CVE-2025-21839.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 7.8 | 0.0023 | | | [CVE-2025-38267](https://patchblox.com/security/data/cve/CVE-2025-38267.md) | High | kernel-abi-stablelists: The kernel packages contain the Linux kernel, the core of any Linux operating system | 7.8 | 0.0021 | | | [CVE-2025-38346](https://patchblox.com/security/data/cve/CVE-2025-38346.md) | High | ftrace: Fix UAF when lookup kallsym after ftrace disabled | 7.8 | 0.0020 | | | [CVE-2025-38015](https://patchblox.com/security/data/cve/CVE-2025-38015.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 7.0 | 0.0020 | | | [CVE-2026-23002](https://patchblox.com/security/data/cve/CVE-2026-23002.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: x... | 7.0 | 0.0018 | | | [CVE-2026-23040](https://patchblox.com/security/data/cve/CVE-2026-23040.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: fix typo in frequency noti... | 7.6 | 0.0017 | | | [CVE-2025-38405](https://patchblox.com/security/data/cve/CVE-2025-38405.md) | Routine | kernel-debug-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 5.5 | 0.0043 | | | [CVE-2025-40134](https://patchblox.com/security/data/cve/CVE-2025-40134.md) | Routine | kernel-64k-debug-modules-core: The kernel packages contain the Linux kernel, the core of any Linux operating system | 4.7 | 0.0023 | | | [CVE-2025-38275](https://patchblox.com/security/data/cve/CVE-2025-38275.md) | Routine | phy: qcom-qmp-usb: Fix an NULL vs IS_ERR() bug | 5.5 | 0.0021 | | | [CVE-2025-38470](https://patchblox.com/security/data/cve/CVE-2025-38470.md) | Routine | net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime | 5.5 | 0.0021 | | | [CVE-2025-38097](https://patchblox.com/security/data/cve/CVE-2025-38097.md) | Routine | espintcp: remove encap socket caching to avoid reference leak | 5.5 | 0.0021 | | | [CVE-2025-38166](https://patchblox.com/security/data/cve/CVE-2025-38166.md) | Routine | bpf: fix ktls panic with sockmap | 5.5 | 0.0020 | | | [CVE-2025-40034](https://patchblox.com/security/data/cve/CVE-2025-40034.md) | Routine | kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system | 6.6 | 0.0020 | | | [CVE-2025-38345](https://patchblox.com/security/data/cve/CVE-2025-38345.md) | Routine | ACPICA: fix acpi operand cache leak in dswstate.c | 5.5 | 0.0020 | | | [CVE-2025-37980](https://patchblox.com/security/data/cve/CVE-2025-37980.md) | Routine | block: fix resource leak in blk_register_queue() error path | 5.5 | 0.0019 | | | [CVE-2025-38441](https://patchblox.com/security/data/cve/CVE-2025-38441.md) | Routine | kernel-debug-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system | 5.5 | 0.0019 | | | [CVE-2025-38202](https://patchblox.com/security/data/cve/CVE-2025-38202.md) | Routine | bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem() | 5.5 | 0.0018 | | | [CVE-2025-71117](https://patchblox.com/security/data/cve/CVE-2025-71117.md) | Routine | linux: In the Linux kernel, the following vulnerability has been resolved: block: Remove queue freezing from several sysfs... | 5.5 | 0.0010 | | --- Data as of 2026-11-07T18:46:35Z UTC. 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