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The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-tools-libs-devel | May 4, 2022 | Jun 4, 2021 |
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade perfUpgrade kernel-tools | Jul 4, 2022 | Jun 4, 2021 |
| Centos_linux | — | Upgrade kernel-rtUpgrade kernel | Nov 10, 2021 | Jun 4, 2021 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Jun 4, 2021 |
| Oracle_linux | — | Upgrade kernel | Nov 18, 2021 | May 11, 2021 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernel | Nov 10, 2021 | Jun 4, 2021 |
| Suse | — | Upgrade kernel-defaultUpgrade reiserfs-kmp-preemptUpgrade reiserfs-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kernel-source-vanillaUpgrade kernel-kvmsmall-livepatch-develUpgrade gfs2-kmp-defaultUpgrade kernel-azure-optionalUpgrade kernel-default-livepatch-develUpgrade kernel-azureUpgrade kernel-debug-develUpgrade dlm-kmp-preemptUpgrade cluster-md-kmp-64kbUpgrade kernel-azure-extraUpgrade kernel-default-optionalUpgrade kselftests-kmp-64kbUpgrade kernel-64kb-extraUpgrade gfs2-kmp-azureUpgrade kernel-default-livepatchUpgrade kselftests-kmp-azureUpgrade kernel-source-azureUpgrade kernel-preempt-extraUpgrade kernel-preempt-livepatch-develUpgrade kernel-preempt-develUpgrade gfs2-kmp-preemptUpgrade kernel-docs-htmlUpgrade dlm-kmp-64kbUpgrade kernel-obs-buildUpgrade ocfs2-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-develUpgrade kernel-default-base-rebuildUpgrade kselftests-kmp-preemptUpgrade cluster-md-kmp-preemptUpgrade kernel-preempt-optionalUpgrade kernel-default-baseUpgrade gfs2-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade kernel-obs-qaUpgrade cluster-md-kmp-azureUpgrade kernel-default-develUpgrade kselftests-kmp-defaultUpgrade kernel-sourceUpgrade kernel-zfcpdumpUpgrade kernel-default-extraUpgrade kernel-azure-develUpgrade kernel-devel-azureUpgrade reiserfs-kmp-azureUpgrade kernel-64kb-develUpgrade kernel-64kb-livepatch-develUpgrade kernel-docsUpgrade kernel-preemptUpgrade dlm-kmp-azureUpgrade kernel-macrosUpgrade kernel-64kbUpgrade kernel-syms-azureUpgrade kernel-64kb-optionalUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-preemptUpgrade kernel-debug-livepatch-develUpgrade kernel-azure-livepatch-develUpgrade kernel-debugUpgrade kernel-kvmsmallUpgrade kernel-symsUpgrade kernel-kvmsmall-devel | Jun 16, 2021 | May 11, 2021 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-5.11.0-1008-raspi-nolpaeUpgrade linux-image-5.11.0-1006-oracleUpgrade linux-image-5.11.0-17-genericUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-5.11.0-1007-gcpUpgrade linux-image-lowlatencyUpgrade linux-image-5.8.0-1027-kvmUpgrade linux-image-azureUpgrade linux-image-5.11.0-1007-awsUpgrade linux-image-generic-lpaeUpgrade linux-image-raspiUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.11.0-17-generic-lpaeUpgrade linux-image-5.11.0-1008-raspiUpgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-5.8.0-1024-raspiUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.10.0-1026-oemUpgrade linux-image-5.8.0-1024-raspi-nolpaeUpgrade linux-image-oracleUpgrade linux-image-5.11.0-1005-azureUpgrade linux-image-5.11.0-1007-kvmUpgrade linux-image-oem-20.04Upgrade linux-image-5.11.0-17-lowlatencyUpgrade linux-image-5.11.0-17-generic-64kUpgrade linux-image-gkeUpgrade linux-image-oem-20.04bUpgrade linux-image-genericUpgrade linux-image-5.8.0-1032-azureUpgrade linux-image-5.8.0-53-generic-lpaeUpgrade linux-image-gcpUpgrade linux-image-5.8.0-53-lowlatencyUpgrade linux-image-5.8.0-1033-awsUpgrade linux-image-generic-64kUpgrade linux-image-5.8.0-53-generic-64kUpgrade linux-image-5.8.0-1031-gcpUpgrade linux-image-virtualUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.8.0-1029-oracleUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.8.0-53-generic | May 12, 2021 | May 11, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 4, 2021 |
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