In the Linux kernel, the following vulnerability has been resolved:
dm cache: fix flushing uninitialized delayed_work on cache_ctr error
An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error.
Reproduce steps:
dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0"
Kernel logs:
(snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890
Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-headersUpgrade kernel-livepatch-5.15.184-125.190Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.237-230.949Upgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-develUpgrade perfUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64 | May 30, 2025 | Nov 19, 2024 |
| Amazon_linux_2023 | — | Upgrade bpftoolUpgrade kernel-libbpf-develUpgrade kernelUpgrade kernel-livepatch-6.1.119-129.201Upgrade kernel-modules-extra-commonUpgrade bpftool-debuginfoUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade kernel-libbpf-staticUpgrade python3-perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade python3-perfUpgrade kernel-develUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-toolsUpgrade perf-debuginfo | Mar 27, 2025 | Nov 19, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Dec 2, 2024 | Nov 19, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernelUpgrade bpftoolUpgrade kernel-abi-stablelists | Feb 11, 2025 | Nov 19, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Feb 11, 2025 | Nov 19, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Jul 17, 2025 | Nov 19, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 19, 2024 |
| Ubuntu | — | Upgrade linux-image-oracleUpgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.11.0-1009-awsUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-lowlatency-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-5.15Upgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-gcp-5.15Upgrade linux-image-gkeopUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-gkeop-6.8Upgrade linux-image-fipsUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-lowlatency-5.15Upgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-5.15.0-1088-awsUpgrade linux-image-aws-fips-5.15Upgrade linux-image-genericUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-nvidia-tegraUpgrade linux-image-gkeUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-gcp-fipsUpgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-ibmUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-generic-lpaeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1027-azureUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidiaUpgrade linux-image-oem-22.04aUpgrade linux-image-ibm-5.15Upgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-azure-fdeUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-6.8.0-58-genericUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-azure-nvidiaUpgrade linux-image-raspiUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-5.15.0-144-genericUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-5.15.0-144-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-kvm-5.15Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-fips-5.15Upgrade linux-image-raspi-realtimeUpgrade linux-image-generic-64kUpgrade linux-image-azure-cvmUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-oem-22.04cUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-intelUpgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-virtualUpgrade linux-image-oem-20.04dUpgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-oracle-5.15Upgrade linux-image-azure-5.15Upgrade linux-image-raspi-5.15Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-realtimeUpgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-oem-20.04cUpgrade linux-image-gcpUpgrade linux-image-nvidia-5.15Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-ibm-classicUpgrade linux-image-oem-22.04bUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-virtual-5.15Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-azureUpgrade linux-image-azure-lts-24.04Upgrade linux-image-realtime-5.15 | Feb 20, 2025 | Nov 19, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Nov 19, 2024 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub