CVE-2023-52983
Linux Kernel Block BFQ Uninitialized Free
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().
INFO
Published Date :
March 27, 2025, 5:15 p.m.
Last Modified :
April 1, 2025, 3:39 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2023-52983.
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The following list is the news that have been mention
CVE-2023-52983 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-52983 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 01, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.86 up to (excluding) 5.15.93 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.2 up to (excluding) 6.1.11 *cpe:2.3:o:linux:linux_kernel:6.0.16:*:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 27, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 27, 2025
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140 Added Reference https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5 Added Reference https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2 Added Reference https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-52983 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-52983
weaknesses.