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A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 3, 2021 | Feb 3, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade kernel-develUpgrade perfUpgrade python-perfUpgrade kernel-headersUpgrade kernel-tools-libsUpgrade kernel-sourceUpgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade bpftool | May 18, 2021 | Apr 12, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade kernel-toolsUpgrade python3-perf | Jun 2, 2021 | May 26, 2021 |
| Oracle_linux | — | Upgrade kernel-uek | Feb 9, 2021 | Oct 22, 2020 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 26, 2021 |
| Suse | — | Upgrade kernel-develUpgrade kernel-default-livepatchUpgrade kernel-zfcpdumpUpgrade ocfs2-kmp-defaultUpgrade kernel-obs-qaUpgrade kernel-default-livepatch-develUpgrade dlm-kmp-defaultUpgrade kernel-64kbUpgrade kernel-debugUpgrade kernel-64kb-optionalUpgrade kernel-64kb-develUpgrade kernel-debug-develUpgrade kernel-default-baseUpgrade kernel-default-extraUpgrade kernel-livepatch-4_12_14-197_83-defaultUpgrade kernel-azure-baseUpgrade kernel-kvmsmall-develUpgrade kernel-preempt-develUpgrade kernel-source-azureUpgrade kernel-default-develUpgrade reiserfs-kmp-defaultUpgrade kernel-symsUpgrade kernel-default-manUpgrade kernel-docs-htmlUpgrade kernel-preempt-optionalUpgrade kernel-64kb-extraUpgrade kernel-livepatch-5_3_18-24_49-defaultUpgrade kernel-docsUpgrade kernel-kvmsmallUpgrade kernel-devel-azureUpgrade kernel-default-base-rebuildUpgrade kernel-syms-azureUpgrade kernel-defaultUpgrade kernel-macrosUpgrade cluster-md-kmp-defaultUpgrade kernel-preemptUpgrade kernel-sourceUpgrade gfs2-kmp-defaultUpgrade kernel-preempt-extraUpgrade kernel-obs-buildUpgrade kernel-default-optionalUpgrade kernel-azure-develUpgrade kernel-source-vanillaUpgrade kernel-azure | Feb 6, 2021 | Feb 6, 2021 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-virtualUpgrade linux-image-oemUpgrade linux-image-5.4.0-1033-kvmUpgrade linux-image-oracleUpgrade linux-image-raspi-hwe-18.04Upgrade linux-image-gke-5.4Upgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-5.4.0-1038-oracleUpgrade linux-image-5.4.0-66-generic-lpaeUpgrade linux-image-5.4.0-1040-azureUpgrade linux-image-awsUpgrade linux-image-5.4.0-1010-gkeopUpgrade linux-image-5.4.0-66-lowlatencyUpgrade linux-image-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-5.4.0-66-genericUpgrade linux-image-generic-lpae-hwe-18.04Upgrade linux-image-raspi2Upgrade linux-image-5.4.0-1037-gcpUpgrade linux-image-raspiUpgrade linux-image-gkeopUpgrade linux-image-azureUpgrade linux-image-5.4.0-1038-awsUpgrade linux-image-gcpUpgrade linux-image-5.4.0-1029-raspiUpgrade linux-image-oem-osp1Upgrade linux-image-5.4.0-1036-gkeUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-gkeop-5.4Upgrade linux-image-kvmUpgrade linux-image-generic | Feb 26, 2021 | Feb 6, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 26, 2021 |
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