CVE-2023-52983 Details
Description
In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bic_set_bfqq() After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"), bic->bfqq will be accessed in bic_set_bfqq(), however, in some context bic->bfqq will be freed, and bic_set_bfqq() is called with the freed bic->bfqq. Fix the problem by always freeing bfqq after bic_set_bfqq().
A use-after-free vulnerability has been identified in the Linux kernel's block BFQ (Budget Fair Queueing) I/O scheduler. The issue arises in the function 'bic_set_bfqq()', where the 'bfqq' pointer can be accessed after it has been freed, leading to potential memory corruption. This vulnerability affects several versions of the Linux kernel.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 27, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15.86, < 5.15.93 >= 6.1.2, < 6.1.11 6.0.16 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 1, 2025 | Initial Analysis | [email protected] |
| Mar 27, 2025 | CVE Modified | CISA-ADP |
| Mar 27, 2025 | New CVE Received | kernel.org |