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-livepatch-5.10.237-230.949Upgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.184-125.190Upgrade kernelUpgrade python-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-debuginfoUpgrade bpftoolUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-devel | May 30, 2025 | Nov 19, 2024 |
| Amazon_linux_2023 | — | Upgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perfUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernel-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-modules-extraUpgrade kernel-livepatch-6.1.119-129.201Upgrade kernel-headersUpgrade bpftoolUpgrade kernel-libbpf-develUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade bpftool-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 bpftoolUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelists | Feb 11, 2025 | Nov 19, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-abi-stablelists | 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-6.8.0-1028-raspiUpgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-azure-nvidiaUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-oem-20.04Upgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-ibm-5.15Upgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-6.8.0-58-genericUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-aws-64k-5.15Upgrade linux-image-azure-fips-5.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-azure-fdeUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-oem-22.04aUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-nvidiaUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-oem-20.04bUpgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-aws-fips-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-genericUpgrade linux-image-fipsUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-gke-5.15Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-generic-64k-5.15Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-raspi-nolpaeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-lowlatency-5.15Upgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-gkeopUpgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-5.15Upgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-oracleUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-generic-5.15Upgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-5.15.0-1088-awsUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-oracle-5.15Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-raspi-5.15Upgrade linux-image-oem-22.04bUpgrade linux-image-fips-5.15Upgrade linux-image-kvm-5.15Upgrade linux-image-6.8.0-1026-oemUpgrade linux-image-ibm-classicUpgrade linux-image-gcp-64kUpgrade linux-image-virtual-5.15Upgrade linux-image-aws-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-azure-5.15Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gkeop-5.15Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.11.0-18-genericUpgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-oem-24.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-24.04aUpgrade linux-image-oem-20.04dUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-raspi-realtimeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-5.15.0-144-genericUpgrade linux-image-5.15.0-144-fipsUpgrade linux-image-virtualUpgrade linux-image-kvmUpgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-azure-fipsUpgrade linux-image-azure-cvmUpgrade linux-image-awsUpgrade linux-image-oracle-64kUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-generic-64kUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-azure-lts-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-azureUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-intel-iotgUpgrade linux-image-intelUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1027-awsUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-nvidia-5.15Upgrade linux-image-realtime-5.15Upgrade linux-image-raspiUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-oem-22.04dUpgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-nvidia-64k | 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 |
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