What is CVE-2023-52740?

CVE-2023-52740 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 5.14 onward and patched in 5.15.94, 6.1.12 and 6.2. CVE-2023-52740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52740?

CVE-2023-52740 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-52740?

Yes, CVE-2023-52740 has been patched. Fixed versions include 5.15.94, 6.1.12 and 6.2. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52740 actively exploited?

CVE-2023-52740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2023-52740

Medium

In the Linux kernel, the following vulnerability has been resolved: powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch The RFI and STF security mitigation options can flip the interrupt_exit_not_reentrant static branch condition concurrently with the interrupt exit code which tests that branch. Interrupt exit tests this condition to set MSR[EE|RI] for exit, then again in the case a soft-masked interrupt is found pending, to recover the MSR so the interrupt can be replayed before attempting to exit again. If the condition changes between these two tests, the MSR and irq soft-mask state will become corrupted, leading to warnings and possible crashes. For example, if the branch is initially true then false, MSR[EE] will be 0 but PACA_IRQ_HARD_DIS clear and EE may not get enabled, leading to warnings in irq_64.c.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-09-23

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2023-52740 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.14 and later are affected. Fixed in 5.15.94, 6.1.12, 6.2 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.15.94 5.15.x ✓ 6.1.12 6.1.x ✓ 6.2

References

3 total

Kernel Git
https://git.kernel.org/stable/c/2ea31e2e62bbc4d11c411eeb36f1b02841dbcab1

Patch
Kernel Git
https://git.kernel.org/stable/c/6f097c24815e67909a1fcc2c605586d02babd673

Patch
Kernel Git
https://git.kernel.org/stable/c/86f7e423933608d536015a0f2eb9e0338c1227e0

Patch

Details

CVE ID CVE-2023-52740

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-09-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52740?

CVE-2023-52740 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.94, 6.1.12 and 6.2. CVE-2023-52740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52740?

CVE-2023-52740 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-52740?

Yes. CVE-2023-52740 has been patched. Fixed versions include 5.15.94, 6.1.12 and 6.2. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52740 actively exploited?

No. CVE-2023-52740 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.