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In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix softlockup in arena_map_free on 64k page kernel
On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y, arena_htab tests cause a segmentation fault and soft lockup. The same failure is not observed with 4k pages on aarch64.
It turns out arena_map_free() is calling apply_to_existing_page_range() with the address returned by bpf_arena_get_kern_vm_start(). If this address is not page-aligned the code ends up calling apply_to_pte_range() with that unaligned address causing soft lockup.
Fix it by round up GUARD_SZ to PAGE_SIZE << 1 so that the division by 2 in bpf_arena_get_kern_vm_start() returns a page-aligned value.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-zfcpdump-develUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-modules-extraUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-rt-debug-modules-extraUpgrade kernel-64k-modules-coreUpgrade rtlaUpgrade kernel-zfcpdumpUpgrade python3-perfUpgrade kernel-rt-64k-coreUpgrade kernel-tools-libsUpgrade kernel-debug-coreUpgrade kernel-debug-modules-coreUpgrade kernel-rt-debug-develUpgrade kernel-cross-headersUpgrade kernel-64k-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-64k-debug-modulesUpgrade kernel-zfcpdump-devel-matchedUpgrade kernelUpgrade kernel-debug-modulesUpgrade kernel-develUpgrade kernel-64k-debug-develUpgrade kernel-debug-uki-virtUpgrade kernel-rt-coreUpgrade kernel-64k-debug-modules-coreUpgrade kernel-modulesUpgrade kernel-debug-develUpgrade kernel-rt-debugUpgrade kernel-rt-debug-coreUpgrade kernel-uki-virtUpgrade kernel-64k-modules-extraUpgrade kernel-rt-64k-develUpgrade perfUpgrade kernel-rt-develUpgrade kernel-64k-debug-coreUpgrade kernel-rt-64k-modules-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-64k-debugUpgrade kernel-rt-64kUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-coreUpgrade libperfUpgrade rvUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-abi-stablelistsUpgrade kernel-devel-matchedUpgrade kernel-headersUpgrade kernel-64kUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-modulesUpgrade kernel-docUpgrade kernel-modules-coreUpgrade kernel-rt-64k-debug-coreUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rtUpgrade kernel-rt-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-modules-extraUpgrade kernel-64k-devel-matchedUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-debug-devel | Nov 20, 2025 | Nov 11, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel | Nov 28, 2025 | Mar 12, 2025 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Jul 9, 2025 | Mar 12, 2025 |
| Rocky_linux | — | Upgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-modulesUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-develUpgrade kernel-tools-libs-develUpgrade kernel-develUpgrade kernel-toolsUpgrade kernel-zfcpdump-coreUpgrade libperf-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-extraUpgrade kernel-rtUpgrade kernel-rt-debug-debuginfoUpgrade perfUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-debugUpgrade kernel-rt-modulesUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libsUpgrade rvUpgrade kernel-rt-modules-coreUpgrade kernel-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-develUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-modules-coreUpgrade kernel-debug-debuginfoUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-uki-virtUpgrade kernel-modules-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-modules-extra-matchedUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-devel-matchedUpgrade kernel-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-tools-debuginfoUpgrade kernel-debug-develUpgrade python3-perfUpgrade kernel-debug-devel-matchedUpgrade kernelUpgrade rtlaUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel-rt-coreUpgrade kernel-modulesUpgrade kernel-debugUpgrade libperf | Feb 5, 2026 | Nov 21, 2025 |
| Suse | — | Upgrade kernel-devel-azureUpgrade kernel-64kb-extraUpgrade kernel-defaultUpgrade kernel-64kb-develUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-zfcpdumpUpgrade kernel-docs-htmlUpgrade kernel-docsUpgrade kernel-azure-extraUpgrade kernel-default-livepatchUpgrade kernel-default-develUpgrade kernel-64kbUpgrade kernel-source-azureUpgrade kernel-azure-vdsoUpgrade kernel-symsUpgrade kernel-azureUpgrade kernel-sourceUpgrade kernel-azure-develUpgrade kernel-default-vdsoUpgrade kernel-source-vanillaUpgrade kernel-kvmsmallUpgrade kernel-default-extraUpgrade kernel-obs-qaUpgrade kernel-macrosUpgrade kernel-devel | Dec 5, 2025 | Dec 5, 2025 |
| Ubuntu | — | Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-1015-azure-fdeUpgrade linux-image-6.11.0-1022-oemUpgrade linux-image-6.11.0-1014-awsUpgrade linux-image-azureUpgrade linux-image-genericUpgrade linux-image-6.11.0-1015-gcp-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.11.0-26-generic-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1016-oracleUpgrade linux-image-gcp-64kUpgrade linux-image-oracle-64kUpgrade linux-image-6.11.0-1013-raspiUpgrade linux-image-6.11.0-1010-realtimeUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1015-azureUpgrade linux-image-raspiUpgrade linux-image-generic-64kUpgrade linux-image-azure-fdeUpgrade linux-image-6.11.0-26-genericUpgrade linux-image-awsUpgrade linux-image-6.11.0-1014-lowlatencyUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-virtualUpgrade linux-image-oracleUpgrade linux-image-gcpUpgrade linux-image-6.11.0-1015-gcpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-6.11.0-1016-oracle-64kUpgrade linux-image-6.11.0-1014-lowlatency-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-virtual-hwe-24.04 | May 21, 2025 | Mar 12, 2025 |
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