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.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perfUpgrade kernel-debuginfoUpgrade kernel-livepatch-5.15.117-72.142Upgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-headersUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.10.184-174.730Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-develUpgrade kernel-tools-develUpgrade perfUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-livepatch-6.1.34-56.100Upgrade kernel-headersUpgrade kernelUpgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade python3-perf-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade bpftool | 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-azureUpgrade linux-awsUpgrade linux-azure-5.4Upgrade linux-nvidia-tegraUpgrade linux-gcp-fipsUpgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-iotUpgrade linuxUpgrade linux-nvidia-tegra-5.15Upgrade linux-raspi-5.4Upgrade linux-realtimeUpgrade linux-intel-iot-realtimeUpgrade linux-ibm-5.15Upgrade linux-aws-fipsUpgrade linux-xilinx-zynqmpUpgrade linux-oracle-5.4Upgrade linux-riscv-5.15Upgrade linux-nvidia-tegra-igxUpgrade linux-ibmUpgrade linux-lowlatencyUpgrade linux-raspiUpgrade linux-gcp-5.15Upgrade linux-gcp-5.4Upgrade linux-nvidiaUpgrade linux-fipsUpgrade linux-kvmUpgrade linux-aws-5.4Upgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-oracle-5.15Upgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-hwe-5.4Upgrade linux-azure-5.15Upgrade linux-oracle | 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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