What is CVE-2023-52639?

CVE-2023-52639 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 4.8 onward and patched in 6.1.82, 6.6.22, 6.7.6 and others. CVE-2023-52639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52639?

CVE-2023-52639 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-2023-52639?

Yes, CVE-2023-52639 has been patched. Fixed versions include 6.1.82, 6.6.22, 6.7.6 and others. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52639 actively exploited?

CVE-2023-52639 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-2023-52639

Medium

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.

Package Linux Kernel

Published 2024-04-03

Last modified 2025-03-17

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-2023-52639 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 4.8 and later are affected. Fixed in 6.1.82, 6.6.22, 6.7.6, 6.8 and their respective stable series.

Affected from

≥ 4.8

Fixed in

✓ 6.1.82 6.1.x ✓ 6.6.22 6.6.x ✓ 6.7.6 6.7.x ✓ 6.8

References

4 total

Kernel Git
https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082

Patch
Kernel Git
https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc

Patch
Kernel Git
https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380

Patch
Kernel Git
https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32

Patch

Details

CVE ID CVE-2023-52639

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2024-04-03

Modified 2025-03-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52639?

CVE-2023-52639 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 4.8 onward and has been patched in 6.1.82, 6.6.22, 6.7.6 and others. CVE-2023-52639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52639?

CVE-2023-52639 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-2023-52639?

Yes. CVE-2023-52639 has been patched. Fixed versions include 6.1.82, 6.6.22, 6.7.6 and others. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52639 actively exploited?

No. CVE-2023-52639 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.