What is CVE-2025-37773?

CVE-2025-37773 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.4 onward and patched in 5.4.293, 5.10.237, 5.15.181 and others. CVE-2025-37773 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37773?

CVE-2025-37773 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-37773?

Yes, CVE-2025-37773 has been patched. Fixed versions include 5.4.293, 5.10.237, 5.15.181 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37773 actively exploited?

CVE-2025-37773 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37773

Medium

In the Linux kernel, the following vulnerability has been resolved: virtiofs: add filesystem context source name check In certain scenarios, for example, during fuzz testing, the source name may be NULL, which could lead to a kernel panic. Therefore, an extra check for the source name should be added.

Package Linux Kernel

Published 2025-05-01

Last modified 2025-11-05

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.25, 6.14.4, 6.15 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.4.293 5.4.x ✓ 5.10.237 5.10.x ✓ 5.15.181 5.15.x ✓ 6.1.135 6.1.x ✓ 6.6.88 6.6.x ✓ 6.12.25 6.12.x ✓ 6.14.4 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37773 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Mailing List
Debian Security
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Mailing List
Kernel patch commit
https://git.kernel.org/stable/c/599d1e2a6aecc44acf22fe7ea6f5e84a7e526abe
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5ee09cdaf3414f6c92960714af46d3d90eede2f3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9d6dcf18a1b49990295ac8a05fd9bdfd27ccbf88
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-37773

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-01

Modified 2025-11-05

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37773?

CVE-2025-37773 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.4 onward and has been patched in 5.4.293, 5.10.237, 5.15.181 and others. CVE-2025-37773 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37773?

CVE-2025-37773 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-37773?

Yes — CVE-2025-37773 has been patched. Fixed versions include 5.4.293, 5.10.237, 5.15.181 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37773 actively exploited?

No — CVE-2025-37773 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.