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In the Linux kernel, the following vulnerability has been resolved:
cachestat: fix page cache statistics permission checking
When the 'cachestat()' system call was added in commit cf264e1329fb ("cachestat: implement cachestat syscall"), it was meant to be a much more convenient (and performant) version of mincore() that didn't need mapping things into the user virtual address space in order to work.
But it ended up missing the "check for writability or ownership" fix for mincore(), done in commit 134fca9063ad ("mm/mincore.c: make mincore() more conservative").
This just adds equivalent logic to 'cachestat()', modified for the file context (rather than vma).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernel-zfcpdump-develUpgrade kernel-modules-coreUpgrade kernel-64k-devel-matchedUpgrade kernel-64k-debug-modules-extraUpgrade kernel-headersUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rtUpgrade perfUpgrade kernel-rt-modulesUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-debugUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-64k-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-modules-extraUpgrade kernel-devel-matchedUpgrade kernel-uki-virtUpgrade kernel-docUpgrade kernel-rt-debug-develUpgrade kernel-uki-virt-addonsUpgrade libperfUpgrade kernel-rt-64k-modules-extraUpgrade kernel-zfcpdump-modules-coreUpgrade python3-perfUpgrade kernel-rt-modules-coreUpgrade kernel-tools-libs-develUpgrade kernel-64k-coreUpgrade kernel-modulesUpgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-debug-coreUpgrade kernel-rt-64k-develUpgrade kernel-64k-modules-extraUpgrade kernel-rt-64k-coreUpgrade kernel-64k-modulesUpgrade kernel-64k-develUpgrade kernel-rt-64k-debug-develUpgrade kernel-debug-modulesUpgrade kernel-64k-debug-coreUpgrade kernel-debug-modules-coreUpgrade kernel-debug-modules-extraUpgrade kernel-debug-uki-virtUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-64kUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-64kUpgrade rvUpgrade kernel-rt-64k-debugUpgrade kernel-zfcpdumpUpgrade kernel-debug-develUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-develUpgrade kernel-rt-coreUpgrade kernel-rt-modules-extraUpgrade kernel-cross-headersUpgrade kernel-toolsUpgrade kernel-64k-debug-develUpgrade kernel-develUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-debugUpgrade rtlaUpgrade kernel-64k-modules-coreUpgrade kernel-modules-extraUpgrade kernel-debug-coreUpgrade kernel-rt-debug-modules | Nov 20, 2025 | Nov 11, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel | Nov 28, 2025 | Feb 10, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | Jul 9, 2025 | Feb 10, 2025 |
| Rocky_linux | — | Upgrade kernel-zfcpdump-modules-extraUpgrade perfUpgrade python3-perfUpgrade kernel-rt-develUpgrade kernel-modules-extra-matchedUpgrade kernel-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-debugUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debug-develUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debugUpgrade kernel-modulesUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernel-debug-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdumpUpgrade python3-perf-debuginfoUpgrade kernel-develUpgrade kernel-coreUpgrade kernel-rt-coreUpgrade kernel-zfcpdump-develUpgrade kernel-rt-modules-extraUpgrade kernel-tools-debuginfoUpgrade rtlaUpgrade kernel-debug-modules-coreUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-zfcpdump-modulesUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-debug-modules-extraUpgrade perf-debuginfoUpgrade kernel-rtUpgrade kernel-devel-matchedUpgrade kernel-uki-virt-addonsUpgrade kernel-modules-coreUpgrade kernel-zfcpdump-coreUpgrade kernelUpgrade kernel-rt-modules-coreUpgrade kernel-rt-debug-develUpgrade libperf-debuginfoUpgrade kernel-rt-debuginfoUpgrade rvUpgrade kernel-debug-modules-extraUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-modulesUpgrade libperf | Feb 5, 2026 | Nov 21, 2025 |
| Suse | — | Upgrade kernel-zfcpdumpUpgrade kernel-64kbUpgrade kernel-64kb-develUpgrade kernel-obs-qaUpgrade kernel-devel-azureUpgrade kernel-azure-develUpgrade kernel-azure-vdsoUpgrade kernel-default-extraUpgrade kernel-kvmsmallUpgrade kernel-docsUpgrade kernel-macrosUpgrade kernel-kvmsmall-develUpgrade kernel-symsUpgrade kernel-sourceUpgrade kernel-default-develUpgrade kernel-64kb-extraUpgrade kernel-source-azureUpgrade kernel-defaultUpgrade kernel-azure-extraUpgrade kernel-kvmsmall-vdsoUpgrade kernel-source-vanillaUpgrade kernel-docs-htmlUpgrade kernel-default-livepatchUpgrade kernel-default-vdsoUpgrade kernel-azureUpgrade kernel-devel | Dec 5, 2025 | Dec 5, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1027-oracle-64kUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1026-gkeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.11.0-24-generic-64kUpgrade linux-image-6.11.0-1013-gcp-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1027-oracleUpgrade linux-image-kvmUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1018-azure-nvidiaUpgrade linux-image-gcpUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-2024-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-62-lowlatencyUpgrade linux-image-nvidia-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1029-nvidiaUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-64-genericUpgrade linux-image-6.11.0-1013-azure-fdeUpgrade linux-image-oem-24.04bUpgrade linux-image-generic-6.8Upgrade linux-image-6.8.0-62-genericUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1029-nvidia-lowlatencyUpgrade linux-image-6.8.0-1029-nvidia-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-awsUpgrade linux-image-gcp-64kUpgrade linux-image-6.11.0-1013-gcpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-1008-realtimeUpgrade linux-image-oem-22.04dUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-64-generic-64kUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1020-oemUpgrade linux-image-6.8.0-1029-oemUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.11.0-1012-awsUpgrade linux-image-6.11.0-1014-oracle-64kUpgrade linux-image-gkeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1030-awsUpgrade linux-image-6.11.0-24-genericUpgrade linux-image-6.8.0-1031-gcpUpgrade linux-image-6.8.0-1029-raspiUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-1012-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-62-generic-64kUpgrade linux-image-raspiUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-6.8.0-1029-nvidia-64kUpgrade linux-image-azureUpgrade linux-image-ibm-classicUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1030-azureUpgrade linux-image-oem-24.04aUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1030-azure-fdeUpgrade linux-image-6.11.0-1013-azureUpgrade linux-image-6.8.0-1031-gcp-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1012-lowlatencyUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-22.04Upgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1027-ibmUpgrade linux-image-6.8.0-1030-aws-64kUpgrade linux-image-6.11.0-1014-oracleUpgrade linux-image-virtual-6.8Upgrade linux-image-6.8.1-1023-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.11.0-1011-raspiUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gkeopUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-ibmUpgrade linux-image-aws-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1013-gkeopUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-genericUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-62-lowlatency-64k | Apr 24, 2025 | Feb 10, 2025 |
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