What is CVE-2026-74425?

CVE-2026-74425 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, affecting Linux kernel versions from 6.15 onward and patched in 6.18.40, 7.1.5 and 7.2. CVE-2026-74425 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-74425?

CVE-2026-74425 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-74425?

Yes, CVE-2026-74425 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-74425 actively exploited?

CVE-2026-74425 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-74425

High

In the Linux kernel, the following vulnerability has been resolved: afs: handle CB.InitCallBackState3 requests without a server record The cache manager callback path now attaches the server record to an incoming call through the rxrpc peer's app data. That association is not guaranteed to exist for every callback request, and most callback handlers already tolerate that case. Make CB.InitCallBackState3 follow the same pattern by checking whether a server record was attached before using it. If the peer is not mapped to a server record, trace the request and ignore it, matching the existing behaviour for other unmatched callback requests. This keeps the callback handler consistent with the rest of the cache manager service and avoids depending on peer state that may not be available for a given request.

Package Linux Kernel

Published 2026-08-15

Last modified 2026-08-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 6.18.40, 7.1.5, 7.2 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.40 6.18.x ✓ 7.1.5 7.1.x ✓ 7.2

References

4 total

Details

CVE ID CVE-2026-74425

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2026-08-15

Modified 2026-08-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-74425?

CVE-2026-74425 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.40, 7.1.5 and 7.2. CVE-2026-74425 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-74425?

CVE-2026-74425 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-74425?

Yes. CVE-2026-74425 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-74425 actively exploited?

No. CVE-2026-74425 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.