# RHSA-2021:1093: Security update for 23 packages RHSA-2021:1093, released April 6, 2021, fixes 8 CVEs across 23 products. None of them is reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/fix/linux/rhsa-2021-1093 - Platform: Linux - Released: Apr 6, 2021 - Priority: High (Closes CVE-2020-28374, high severity) - CVEs: 8, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://access.redhat.com/errata/RHSA-2021:1093 ## Applies to | Product | Release | Fixed in | |---|---|---| | [bpftool](https://patchblox.com/security/data/product/linux/bpftool.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-abi-whitelists](https://patchblox.com/security/data/product/linux/kernel-abi-whitelists.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-core](https://patchblox.com/security/data/product/linux/kernel-core.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-debug](https://patchblox.com/security/data/product/linux/kernel-debug.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-debug-core](https://patchblox.com/security/data/product/linux/kernel-debug-core.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-debug-devel](https://patchblox.com/security/data/product/linux/kernel-debug-devel.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-debug-modules](https://patchblox.com/security/data/product/linux/kernel-debug-modules.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-debug-modules-extra](https://patchblox.com/security/data/product/linux/kernel-debug-modules-extra.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-devel](https://patchblox.com/security/data/product/linux/kernel-devel.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-doc](https://patchblox.com/security/data/product/linux/kernel-doc.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-modules](https://patchblox.com/security/data/product/linux/kernel-modules.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-modules-extra](https://patchblox.com/security/data/product/linux/kernel-modules-extra.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-tools](https://patchblox.com/security/data/product/linux/kernel-tools.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-tools-libs](https://patchblox.com/security/data/product/linux/kernel-tools-libs.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-tools-libs-devel](https://patchblox.com/security/data/product/linux/kernel-tools-libs-devel.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-zfcpdump](https://patchblox.com/security/data/product/linux/kernel-zfcpdump.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-zfcpdump-core](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-core.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-zfcpdump-devel](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-devel.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-zfcpdump-modules](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [kernel-zfcpdump-modules-extra](https://patchblox.com/security/data/product/linux/kernel-zfcpdump-modules-extra.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [perf](https://patchblox.com/security/data/product/linux/perf.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | | [python3-perf](https://patchblox.com/security/data/product/linux/python3-perf.md) | RHEL 8 | 0:4.18.0-240.22.1.el8_3 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2020-28374](https://patchblox.com/security/data/cve/CVE-2020-28374.md) | High | bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 8.1 | 0.0664 | | | [CVE-2021-27365](https://patchblox.com/security/data/cve/CVE-2021-27365.md) | High | kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 7.8 | 0.0210 | | | [CVE-2021-26708](https://patchblox.com/security/data/cve/CVE-2021-26708.md) | High | kernel-modules: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 7.8 | 0.0160 | | | [CVE-2021-3347](https://patchblox.com/security/data/cve/CVE-2021-3347.md) | High | kernel-doc: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 7.8 | 0.0137 | | | [CVE-2021-27364](https://patchblox.com/security/data/cve/CVE-2021-27364.md) | High | kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 7.1 | 0.0097 | | | [CVE-2020-0466](https://patchblox.com/security/data/cve/CVE-2020-0466.md) | High | kernel-rt: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high... | 7.8 | 0.0028 | | | [CVE-2021-27363](https://patchblox.com/security/data/cve/CVE-2021-27363.md) | Routine | kernel-debug-core: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 4.4 | 0.0071 | | | [CVE-2020-27152](https://patchblox.com/security/data/cve/CVE-2020-27152.md) | Routine | kernel-modules-extra: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: u... | 5.5 | 0.0057 | | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). 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