CVE-2024-50081 - Linux Kernel blk-mq Tag Set Setup Vulnerability

CVE ID : CVE-2024-50081
Published : Oct. 29, 2024, 1:15 a.m. | 24 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: blk-mq: setup queue ->tag_set before initializing hctx Commit 7b815817aa58 ("blk-mq: add helper for checking if one CPU is mapped to specified hctx") needs to check queue mapping via tag set in hctx's cpuhp handler. However, q->tag_set may not be setup yet when the cpuhp handler is enabled, then kernel oops is triggered. Fix the issue by setup queue tag_set before initializing hctx.
Severity: 0.0 | NA
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