# RHSA-2026:39083: Security update for 23 packages RHSA-2026:39083, released July 14, 2026, fixes 8 CVEs across 23 products. One of them is being exploited (CVE-2026-53266); 1 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/linux/rhsa-2026-39083 - Platform: Linux - Released: Jul 14, 2026 - Priority: Patch now (Closes CVE-2026-53266, exploited (CISA KEV)) - CVEs: 8, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://access.redhat.com/errata/RHSA-2026:39083 ## Applies to | Product | Release | Fixed in | |---|---|---| | [bpftool](https://patchblox.com/security/data/product/linux/bpftool.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-abi-stablelists](https://patchblox.com/security/data/product/linux/kernel-abi-stablelists.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-core](https://patchblox.com/security/data/product/linux/kernel-core.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-debug](https://patchblox.com/security/data/product/linux/kernel-debug.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-debug-core](https://patchblox.com/security/data/product/linux/kernel-debug-core.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-debug-devel](https://patchblox.com/security/data/product/linux/kernel-debug-devel.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-debug-modules](https://patchblox.com/security/data/product/linux/kernel-debug-modules.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-debug-modules-extra](https://patchblox.com/security/data/product/linux/kernel-debug-modules-extra.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-devel](https://patchblox.com/security/data/product/linux/kernel-devel.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-doc](https://patchblox.com/security/data/product/linux/kernel-doc.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-modules](https://patchblox.com/security/data/product/linux/kernel-modules.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-modules-extra](https://patchblox.com/security/data/product/linux/kernel-modules-extra.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-tools](https://patchblox.com/security/data/product/linux/kernel-tools.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-tools-libs](https://patchblox.com/security/data/product/linux/kernel-tools-libs.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-tools-libs-devel](https://patchblox.com/security/data/product/linux/kernel-tools-libs-devel.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-zfcpdump](https://patchblox.com/security/data/product/linux/kernel-zfcpdump.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-zfcpdump-core](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-core.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-zfcpdump-devel](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-devel.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-zfcpdump-modules](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [kernel-zfcpdump-modules-extra](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules-extra.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [perf](https://patchblox.com/security/data/product/linux/perf.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | | [python3-perf](https://patchblox.com/security/data/product/linux/python3-perf.md) | RHEL 8 | 0:4.18.0-553.143.1.el8_10 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-53266](https://patchblox.com/security/data/cve/CVE-2026-53266.md) | Patch now | netfilter: bridge: make ebt_snat ARP rewrite writable | 8.8 | 0.0093 | CISA KEV | | [CVE-2026-43499](https://patchblox.com/security/data/cve/CVE-2026-43499.md) | High | rtmutex: Use waiter::task instead of current in remove_waiter() | 7.8 | 0.0537 | | | [CVE-2026-53359](https://patchblox.com/security/data/cve/CVE-2026-53359.md) | High | kpatch-patch-4_18_0-553_109_1: This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a run... | 8.8 | 0.0137 | | | [CVE-2026-46113](https://patchblox.com/security/data/cve/CVE-2026-46113.md) | High | bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n... | 8.8 | 0.0020 | | | [CVE-2025-71066](https://patchblox.com/security/data/cve/CVE-2025-71066.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove class from active... | 7.8 | 0.0017 | | | [CVE-2025-71089](https://patchblox.com/security/data/cve/CVE-2025-71089.md) | High | iommu: disable SVA when CONFIG_X86 is set | 7.8 | 0.0016 | | | [CVE-2026-31411](https://patchblox.com/security/data/cve/CVE-2026-31411.md) | High | bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: n... | 7.1 | 0.0013 | | | [CVE-2026-53166](https://patchblox.com/security/data/cve/CVE-2026-53166.md) | High | futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock | 7.8 | n/a | | --- Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). 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