CVE-2024-47706

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix possible UAF for bfqq-bic with merge chain 1 initial state, three tasks: Process 1 Process 2 Process 3 BIC1 BIC2 BIC3 | Λ | Λ | Λ | | | | | | V | V | V | bfqq1 bfqq2 bfqq3 process ref: 1 1 1 2 bfqq1 merged to bfqq...

CVE-2024-47706

CVE-2024-47706 affects the Linux kernel bfq I/O scheduler. The issue was a use-after-free involving bfqq->bic during merges in the bfq_merge/merge-chain flow, which could allow IO handling to operate on a bfqq that is no longer valid. The provided details describe an initial state with three b...