What is CVE-2026-80737?

CVE-2026-80737 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 2.6.39 onward and patched in 5.10.267, 5.15.218, 6.1.185 and others. CVE-2026-80737 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80737?

CVE-2026-80737 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-2026-80737?

Yes, CVE-2026-80737 has been patched. Fixed versions include 5.10.267, 5.15.218, 6.1.185 and others. If you are running Linux kernel 2.6.39 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-80737 actively exploited?

CVE-2026-80737 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80737

High

In the Linux kernel, the following vulnerability has been resolved: serial: amba-pl011: synchronize DMA teardown dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock. Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers.

Package Linux Kernel

Published 2026-09-03

Last modified 2026-10-16

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

Affected versions

Linux kernel versions 2.6.39 and later are affected. Fixed in 5.10.267, 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.45, 7.1.9, 7.2 and their respective stable series.

Affected from

≥ 2.6.39

Fixed in

✓ 5.10.267 5.10.x ✓ 5.15.218 5.15.x ✓ 6.1.185 6.1.x ✓ 6.6.154 6.6.x ✓ 6.12.106 6.12.x ✓ 6.18.45 6.18.x ✓ 7.1.9 7.1.x ✓ 7.2

References

8 total

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-80737

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-09-03

Modified 2026-10-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-80737?

CVE-2026-80737 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 2.6.39 onward and has been patched in 5.10.267, 5.15.218, 6.1.185 and others. CVE-2026-80737 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-80737?

CVE-2026-80737 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-2026-80737?

Yes. CVE-2026-80737 has been patched. Fixed versions include 5.10.267, 5.15.218, 6.1.185 and others. If you are running Linux kernel 2.6.39 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-80737 actively exploited?

No. CVE-2026-80737 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.