CVE-2024-53166 is a Use-After-Free (UAF) vulnerability in the Linux kernel's block layer, specifically within the BFQ I/O scheduler. It occurs because the bfq_limit_depth() function accesses a freed bfqq (BFQ queue) without proper locking, particularly when an io_context is shared by multiple tasks. This flaw affects Linux kernel versions and has a CVSS score of 7.8 (High), indicating a local attack vector with low complexity that could lead to high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.17, < 6.6.64CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.7, < 6.11.11CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.12, < 6.12.2CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
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Oct 27, 2025kernel: block, bfq: fix bfqq uaf in bfq_limit_depth()
Dec 27, 2024block, bfq: fix bfqq uaf in bfq_limit_depth()
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