In the Linux kernel, the following vulnerability has been resolved:
keys: Fix UAF in key_put()
Once a key's reference count has been reduced to 0, the garbage collector thread may destroy it at any time and so key_put() is not allowed to touch the key after that point. The most key_put() is normally allowed to do is to touch key_gc_work as that's a static global variable.
However, in an effort to speed up the reclamation of quota, this is now done in key_put() once the key's usage is reduced to 0 - but now the code is looking at the key after the deadline, which is forbidden.
Fix this by using a flag to indicate that a key can be gc'd now rather than looking at the key's refcount in the garbage collector.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-libbpfUpgrade kernel-livepatch-6.12.22-27.96Upgrade kernel-libbpf-staticUpgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.12Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-modules-extraUpgrade perf6.12Upgrade kernel-headersUpgrade kernel6.12Upgrade kernel-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-libbpf-debuginfoUpgrade kernel-modules-extra-commonUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade perf6.12-debuginfoUpgrade kernel-tools | Apr 15, 2025 | Mar 31, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelists | Jul 1, 2025 | Mar 31, 2025 |
| Oracle_linux | — | Upgrade kernel | Jul 10, 2025 | Mar 31, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Jul 9, 2025 | Mar 31, 2025 |
| Rocky_linux | — | Upgrade kernelUpgrade kernel-debug-debuginfoUpgrade kernel-debugUpgrade kernel-rt-modules-extraUpgrade rvUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-kvmUpgrade kernel-uki-virt-addonsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-cross-headersUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debug-modulesUpgrade kernel-tools-libsUpgrade python3-perf-debuginfoUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-coreUpgrade kernel-rt-develUpgrade kernel-debug-modules-extraUpgrade kernel-rt-modules-coreUpgrade kernel-modules-extraUpgrade kernel-debug-modules-coreUpgrade kernel-rt-debugUpgrade kernel-tools-debuginfoUpgrade kernel-coreUpgrade kernel-tools-libs-develUpgrade kernel-headersUpgrade kernel-modules-coreUpgrade rtlaUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debuginfoUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-develUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-devel-matchedUpgrade libperfUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debuginfoUpgrade kernel-rtUpgrade perf-debuginfoUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debug-develUpgrade kernel-debug-devel-matchedUpgrade kernel-modulesUpgrade kernel-debug-develUpgrade perfUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modules-coreUpgrade python3-perfUpgrade libperf-debuginfoUpgrade kernel-toolsUpgrade kernel-rt-core | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade kernel-zfcpdumpUpgrade kernel-default-extraUpgrade kernel-kvmsmallUpgrade kernel-64kbUpgrade kernel-default-develUpgrade kernel-symsUpgrade kernel-kvmsmall-develUpgrade kernel-obs-qaUpgrade kernel-syms-azureUpgrade kernel-64kb-develUpgrade kernel-devel-azureUpgrade kernel-docsUpgrade kernel-azure-vdsoUpgrade kernel-macrosUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-azure-develUpgrade kernel-default-baseUpgrade kernel-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-develUpgrade kernel-azure-extraUpgrade kernel-docs-htmlUpgrade kernel-defaultUpgrade kernel-obs-buildUpgrade kernel-source-vanillaUpgrade kernel-64kb-extraUpgrade kernel-kvmsmall-vdsoUpgrade kernel-default-livepatchUpgrade kernel-default-vdso | Dec 5, 2025 | Jun 13, 2025 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1017-oracleUpgrade linux-image-6.11.0-1014-raspiUpgrade linux-image-6.11.0-1017-oracle-64kUpgrade linux-image-6.11.0-1015-lowlatency-64kUpgrade linux-image-6.11.0-1024-oemUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.11.0-1016-gcpUpgrade linux-image-raspiUpgrade linux-image-gcp-64kUpgrade linux-image-6.11.0-28-generic-64kUpgrade linux-image-6.11.0-1015-awsUpgrade linux-image-azureUpgrade linux-image-generic-64kUpgrade linux-image-azure-fdeUpgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-oem-24.04bUpgrade linux-image-genericUpgrade linux-image-lowlatencyUpgrade linux-image-virtualUpgrade linux-image-azure-fde-edgeUpgrade linux-image-realtimeUpgrade linux-image-lowlatency-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-28-genericUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-fde-6.11Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-gcpUpgrade linux-image-azure-6.11Upgrade linux-image-6.11.0-1015-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-1016-gcp-64kUpgrade linux-image-awsUpgrade linux-image-6.11.0-1011-realtimeUpgrade linux-image-6.11.0-1018-azureUpgrade linux-image-oracleUpgrade linux-image-lowlatency-6.11 | Jun 26, 2025 | Mar 31, 2025 |
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