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_2023 | — | Upgrade perf-debuginfoUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-livepatch-6.1.188-233.385Upgrade kernel-modules-extra-commonUpgrade perfUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-modules-extraUpgrade python3-perfUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-headersUpgrade kernel | 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 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 21, 2026 | Sep 11, 2026 |
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