What is CVE-2026-98115?

CVE-2026-98115 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 6.6.48 onward and patched in 7.2.7 and 7.3-rc2. CVE-2026-98115 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98115?

CVE-2026-98115 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-98115?

Yes, CVE-2026-98115 has been patched. Fixed versions include 7.2.7 and 7.3-rc2. If you are running Linux kernel 6.6.48 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-98115 actively exploited?

CVE-2026-98115 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-2026-98115

High

In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain sessions during logoff SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects. A deferred byte-range lock remains counted as a running request and only wakes when its file closes. Wake blocked locks during the drain without unpublishing or modifying their file objects. Synchronous CANCEL requests must invoke their cancellation callback to wake pending operations, while CHANGE_NOTIFY completion remains specific to the asynchronous path. Serialize session teardown with channel registration and previous-session cleanup, and use atomic work-state transitions so LOGOFF, CANCEL, and connection teardown invoke cancellation callbacks only once.

Package Linux Kernel

Published 2026-09-25

Last modified 2026-10-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2026-98115 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 6.6.48, 6.10.7, 6.11 and later are affected. Fixed in 7.2.7, 7.3-rc2 and their respective stable series.

Affected from

≥ 6.6.48 ≥ 6.10.7 ≥ 6.11

Fixed in

✓ 7.2.7 7.2.x ✓ 7.3-rc2

References

2 total

Kernel Git
https://git.kernel.org/stable/c/a7e6df0bb92642bee4431b2b85c69ada1e463b21

Patch
Kernel Git
https://git.kernel.org/stable/c/d12168084c8c1b6d883c8eca5853929ac5136a9e

Patch

Details

CVE ID CVE-2026-98115

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-09-25

Modified 2026-10-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-98115?

CVE-2026-98115 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 6.6.48 onward and has been patched in 7.2.7 and 7.3-rc2. CVE-2026-98115 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-98115?

CVE-2026-98115 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-98115?

Yes. CVE-2026-98115 has been patched. Fixed versions include 7.2.7 and 7.3-rc2. If you are running Linux kernel 6.6.48 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-98115 actively exploited?

No. CVE-2026-98115 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.