What is CVE-2026-97548?

CVE-2026-97548 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.14 onward and patched in 6.18.53, 7.2.7 and 7.3-rc3. CVE-2026-97548 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-97548?

CVE-2026-97548 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:N/UI:R/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-97548?

Yes, CVE-2026-97548 has been patched. Fixed versions include 6.18.53, 7.2.7 and 7.3-rc3. If you are running Linux kernel 6.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-97548 actively exploited?

CVE-2026-97548 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-97548

High

In the Linux kernel, the following vulnerability has been resolved: xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions The _maxlevels_ondisk functions are used to compute the size of in-memory btree cursors for each btree type. Unfortunately, LOLLM noticed that the rtrmap and rtrefcount versions of these functions forget to account for the inode root, which means that we could access beyond the end of the cursor given a sufficiently large btree. Fix this.

Package Linux Kernel

Published 2026-09-25

Last modified 2026-09-25

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

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.14 and later are affected. Fixed in 6.18.53, 7.2.7, 7.3-rc3 and their respective stable series.

Affected from

≥ 6.14

Fixed in

✓ 6.18.53 6.18.x ✓ 7.2.7 7.2.x ✓ 7.3-rc3

References

3 total

Details

CVE ID CVE-2026-97548

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-09-25

Modified 2026-09-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-97548?

CVE-2026-97548 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.14 onward and has been patched in 6.18.53, 7.2.7 and 7.3-rc3. CVE-2026-97548 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-97548?

CVE-2026-97548 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:N/UI:R/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-97548?

Yes. CVE-2026-97548 has been patched. Fixed versions include 6.18.53, 7.2.7 and 7.3-rc3. If you are running Linux kernel 6.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-97548 actively exploited?

No. CVE-2026-97548 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.