In the Linux kernel, the following vulnerability has been resolved:
blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx
blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns.
So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.
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-tools-develUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade bpftoolUpgrade perfUpgrade python-perfUpgrade kernelUpgrade python-perf-debuginfoUpgrade kernel-livepatch-5.15.50-23.125Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo | Apr 10, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-abi-stablelists | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libs | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-awsUpgrade linux-gkeUpgrade linux-oracle-5.15Upgrade linux-gkeopUpgrade linux-ibmUpgrade linuxUpgrade linux-lowlatencyUpgrade linux-azure-5.15Upgrade linux-riscv-5.15Upgrade linux-hwe-5.15Upgrade linux-azureUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-realtimeUpgrade linux-gcpUpgrade linux-gcp-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-intel-iotgUpgrade linux-nvidiaUpgrade linux-kvmUpgrade linux-oracle | Mar 19, 2025 | Feb 26, 2025 |
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