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In the Linux kernel, the following vulnerability has been resolved:
dm-stats: fix a crash if allocation of per-cpu data fails
If "dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))" fails, the code jumps to the "out" label and calls dm_stat_free. dm_stat_free does "for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram, s->histogram_alloc_size);", which crashes with NULL pointer dereference if s->stat_percpu[cpu] is NULL.
This commit fixes the bug by testing s->stat_percpu[cpu] for NULL before using it.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-headersUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade bpftoolUpgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-livepatch-5.15.221-157.262Upgrade kernel-livepatch-5.10.270-271.1109Upgrade kernel-tools-debuginfoUpgrade perf | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade perfUpgrade kernel-tools-debuginfoUpgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-headersUpgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernel-livepatch-6.1.188-233.385Upgrade kernel-modules-extra-commonUpgrade bpftool-debuginfoUpgrade kernel-tools | Oct 13, 2026 | Sep 11, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 11, 2026 |
| Redhat_linux | — | No solution exists | Sep 16, 2026 | Sep 11, 2026 |
| Ubuntu | — | Upgrade linux-azure-fde-5.15Upgrade linux-nvidia-tegra-igxUpgrade linux-gcp-fipsUpgrade linux-gcpUpgrade linux-kvmUpgrade linux-azureUpgrade linux-nvidiaUpgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-intel-iotgUpgrade linux-aws-fipsUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-riscv-7.0Upgrade linux-intel-iot-realtimeUpgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-intel-iotg-5.15Upgrade linux-hwe-7.0Upgrade linux-gcp-5.15Upgrade linux-gkeopUpgrade linux-gkeUpgrade linux-ibm-5.15Upgrade linuxUpgrade linux-oem-7.0Upgrade linux-nvidia-tegraUpgrade linux-nvidia-tegra-5.15Upgrade linux-riscv-5.15Upgrade linux-hwe-5.15Upgrade linux-azure-fdeUpgrade linux-aws-5.15Upgrade linux-lowlatencyUpgrade linux-awsUpgrade linux-riscvUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-realtime | Nov 3, 2026 | Sep 11, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 21, 2026 | Sep 11, 2026 |
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