What is CVE-2026-80720?

CVE-2026-80720 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 6.18.44, 7.1.8 and 7.2. CVE-2026-80720 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-80720?

CVE-2026-80720 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-2026-80720?

Yes, CVE-2026-80720 has been patched. Fixed versions include 6.18.44, 7.1.8 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-2026-80720 actively exploited?

CVE-2026-80720 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-80720

High

In the Linux kernel, the following vulnerability has been resolved: iomap: add a separate bio_set for iomap_split_ioend iomap_split_ioend can split bios that already come from iomap_ioend_bioset and thus deadlock when the bioset is exhausted. Add a separate bio_set to avoid this deadlock. Christian Brauner <[email protected]> says: Mark iomap_ioend_split_bioset static as it is only used in ioend.c, fixing the sparse warning reported by the kernel test robot.

Package Linux Kernel

Published 2026-08-28

Last modified 2026-08-29

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 6.18.44, 7.1.8, 7.2 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.44 6.18.x ✓ 7.1.8 7.1.x ✓ 7.2

References

3 total

Details

CVE ID CVE-2026-80720

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2026-08-28

Modified 2026-08-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-80720?

CVE-2026-80720 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 6.18.44, 7.1.8 and 7.2. CVE-2026-80720 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-80720?

CVE-2026-80720 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-2026-80720?

Yes. CVE-2026-80720 has been patched. Fixed versions include 6.18.44, 7.1.8 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-2026-80720 actively exploited?

No. CVE-2026-80720 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.