CVE-2021-47646

Summary

CVE-2021-47646: A Linux kernel vulnerability was identified and resolved. The issue occurred after the reversion of a commit that was not the root cause of the problem. This commit, "block, bfq: honor already-setup queue merges," did not introduce the bug but instead triggered a use-after-free (UAF) issue caused by a different commit. The original commit has been restored to mitigate the issue. The UAF vulnerability was reported in bug #214503.

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