What is CVE-2023-52983?

CVE-2023-52983 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.0.16 onward and patched in 6.1, 5.15.93 and 6.1.11. CVE-2023-52983 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52983?

CVE-2023-52983 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-52983?

Yes, CVE-2023-52983 has been patched. Fixed versions include 6.1, 5.15.93 and 6.1.11. If you are running Linux kernel 6.0.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52983 actively exploited?

CVE-2023-52983 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-52983

High

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().

Package Linux Kernel

Published 2025-03-27

Last modified 2025-04-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-416

CVE-2023-52983 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.0.16, 5.15.86, 6.1.2 and later are affected. Fixed in 6.1, 5.15.93, 6.1.11 and their respective stable series.

Affected from

≥ 6.0.16 ≥ 5.15.86 ≥ 6.1.2

Fixed in

✓ 6.1 6.1.x ✓ 5.15.93 5.15.x ✓ 6.1.11 6.1.x

References

4 total

Kernel Git
https://git.kernel.org/stable/c/511c922c5bf6c8a166bea826e702336bc2424140

Patch
Kernel Git
https://git.kernel.org/stable/c/7f77f3dab5066a7c9da73d72d1eee895ff84a8d5

Patch
Kernel Git
https://git.kernel.org/stable/c/b600de2d7d3a16f9007fad1bdae82a3951a26af2

Patch
Kernel Git
https://git.kernel.org/stable/c/cb1876fc33af26d00efdd473311f1b664c77c44e

Patch

Details

CVE ID CVE-2023-52983

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2025-04-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52983?

CVE-2023-52983 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.0.16 onward and has been patched in 6.1, 5.15.93 and 6.1.11. CVE-2023-52983 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52983?

CVE-2023-52983 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-52983?

Yes. CVE-2023-52983 has been patched. Fixed versions include 6.1, 5.15.93 and 6.1.11. If you are running Linux kernel 6.0.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52983 actively exploited?

No. CVE-2023-52983 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.