What is CVE-2026-52968?

CVE-2026-52968 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 6.0 onward and patched in 6.1.175, 6.6.141, 6.12.91 and others. CVE-2026-52968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-52968?

CVE-2026-52968 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2026-52968?

Yes, CVE-2026-52968 has been patched. Fixed versions include 6.1.175, 6.6.141, 6.12.91 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-52968 actively exploited?

CVE-2026-52968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2026-52968

High

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() index the GAIT by manually multiplying the index with sizeof(struct zpci_gaite). Since aift->gait is already a struct zpci_gaite pointer, this double-scales the offset, accessing element aisb*16 instead of aisb. This causes out-of-bounds accesses when aisb >= 32 (with ZPCI_NR_DEVICES=512) Fix by removing the erroneous sizeof multiplication.

Package Linux Kernel

Published 2026-06-24

Last modified 2026-07-18

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2026-52968 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.0 and later are affected. Fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 and their respective stable series.

Affected from

≥ 6.0

Fixed in

✓ 6.1.175 6.1.x ✓ 6.6.141 6.6.x ✓ 6.12.91 6.12.x ✓ 6.18.33 6.18.x ✓ 7.0.10 7.0.x ✓ 7.1

References

6 total

Kernel Git
https://git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0

Patch
Kernel Git
https://git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261a

Patch
Kernel Git
https://git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828

Patch
Kernel Git
https://git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2

Patch
Kernel Git
https://git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2026-52968

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-06-24

Modified 2026-07-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-52968?

CVE-2026-52968 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.175, 6.6.141, 6.12.91 and others. CVE-2026-52968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-52968?

CVE-2026-52968 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2026-52968?

Yes. CVE-2026-52968 has been patched. Fixed versions include 6.1.175, 6.6.141, 6.12.91 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-52968 actively exploited?

No. CVE-2026-52968 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.