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-develUpgrade bpftoolUpgrade perfUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-livepatch-5.15.50-23.125Upgrade bpftool-debuginfoUpgrade kernel | Apr 10, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-abi-stablelists | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perfUpgrade bpftool | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-realtimeUpgrade linux-nvidiaUpgrade linux-riscv-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-gcpUpgrade linux-kvmUpgrade linux-raspiUpgrade linux-intel-iotgUpgrade linux-aws-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-azureUpgrade linux-oracleUpgrade linux-gkeUpgrade linux-awsUpgrade linux-azure-5.15Upgrade linux-ibmUpgrade linux-lowlatencyUpgrade linuxUpgrade linux-gkeopUpgrade linux-oracle-5.15 | Mar 19, 2025 | Feb 26, 2025 |
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