CVE-2023-52983 - CVE House
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Status published Unknown CVE-2023-52983

block, bfq: fix uaf for bfqq in bic_set_bfqq()

Vulnerability 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().

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a, 094f3d9314d67691cb21ba091c1b528f6e3c4893, 761564d93c8265f65543acf0a576b32d66bfa26a, 64dc8c732f5c2b406cc752e6aaa1bd5471159cab, b22fd72bfebda3956efc4431b60ddfc0a51e03e0, 6.0.16, 5.15.86, 6.1.2

Timeline

Official Publish: March 27th, 2025
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.