In the Linux kernel, the following vulnerability has been resolved:
debugobjects: Don't wake up kswapd from fill_pool()
syzbot is reporting a lockdep warning in fill_pool() because the allocation from debugobjects is using GFP_ATOMIC, which is (__GFP_HIGH | __GFP_KSWAPD_RECLAIM) and therefore tries to wake up kswapd, which acquires kswapd_wait::lock.
Since fill_pool() might be called with arbitrary locks held, fill_pool() should not assume that acquiring kswapd_wait::lock is safe.
Use __GFP_HIGH instead and remove __GFP_NORETRY as it is pointless for !__GFP_DIRECT_RECLAIM allocation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-livepatch-5.15.117-72.142Upgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-livepatch-5.10.184-174.730Upgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade python-perf | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-perf-debuginfoUpgrade kernel-headersUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-livepatch-6.1.34-56.100Upgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernelUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade python3-perfUpgrade kernel-tools | Feb 20, 2026 | Dec 30, 2025 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.15Upgrade linux-azure-5.4Upgrade linux-iotUpgrade linux-awsUpgrade linuxUpgrade linux-nvidia-tegra-5.15Upgrade linux-azureUpgrade linux-gcp-fipsUpgrade linux-nvidia-tegraUpgrade linux-bluefieldUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-gkeUpgrade linux-kvmUpgrade linux-gkeopUpgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-intel-iotgUpgrade linux-oracleUpgrade linux-nvidiaUpgrade linux-ibm-5.15Upgrade linux-gcp-5.4Upgrade linux-realtimeUpgrade linux-fipsUpgrade linux-gcp-5.15Upgrade linux-ibmUpgrade linux-xilinx-zynqmpUpgrade linux-oracle-5.4Upgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-igxUpgrade linux-riscv-5.15Upgrade linux-azure-fdeUpgrade linux-oracle-5.15Upgrade linux-azure-5.15Upgrade linux-raspi | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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