What is CVE-2025-37803?

CVE-2025-37803 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 4.20 onward and patched in 5.4.293, 5.10.237, 5.15.181 and others. CVE-2025-37803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37803?

CVE-2025-37803 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:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-37803?

Yes, CVE-2025-37803 has been patched. Fixed versions include 5.4.293, 5.10.237, 5.15.181 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-37803 actively exploited?

CVE-2025-37803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-37803

High

In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix a buf size overflow issue during udmabuf creation by casting size_limit_mb to u64 when calculate pglimit.

Package Linux Kernel

Published 2025-05-08

Last modified 2025-11-03

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

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-120

CVE-2025-37803 is classified as CWE-120

See CWE-120 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.20 and later are affected. Fixed in 5.4.293, 5.10.237, 5.15.181, 6.1.136, 6.6.89, 6.12.57, 6.14.5, 6.15 and their respective stable series.

Affected from

≥ 4.20

Fixed in

✓ 5.4.293 5.4.x ✓ 5.10.237 5.10.x ✓ 5.15.181 5.15.x ✓ 6.1.136 6.1.x ✓ 6.6.89 6.6.x ✓ 6.12.57 6.12.x ✓ 6.14.5 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-37803 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
Debian Security
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Kernel patch commit
https://git.kernel.org/stable/c/021ba7f1babd029e714d13a6bf2571b08af96d0f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/13fe12c037b470321436deec393030c6153cfeb9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/29b65a3171a49c9b69f31035146be966cec40b7a
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-37803

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-05-08

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-37803?

CVE-2025-37803 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.20 onward and has been patched in 5.4.293, 5.10.237, 5.15.181 and others. CVE-2025-37803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37803?

CVE-2025-37803 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:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-37803?

Yes — CVE-2025-37803 has been patched. Fixed versions include 5.4.293, 5.10.237, 5.15.181 and others. If you are running Linux kernel 4.20 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-37803 actively exploited?

No — CVE-2025-37803 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.