What is CVE-2024-27403?

CVE-2024-27403 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.16 onward and patched in 5.15.150, 6.1.80, 6.6.19 and others. CVE-2024-27403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27403?

CVE-2024-27403 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-2024-27403?

Yes, CVE-2024-27403 has been patched. Fixed versions include 5.15.150, 6.1.80, 6.6.19 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27403 actively exploited?

CVE-2024-27403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-27403

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_flow_offload: reset dst in route object after setting up flow dst is transferred to the flow object, route object does not own it anymore. Reset dst in route object, otherwise if flow_offload_add() fails, error path releases dst twice, leading to a refcount underflow.

Package Linux Kernel

Published 2024-05-17

Last modified 2025-09-18

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 4.16 and later are affected. Fixed in 5.15.150, 6.1.80, 6.6.19, 6.7.7, 6.8 and their respective stable series.

Affected from

≥ 4.16

Fixed in

✓ 5.15.150 5.15.x ✓ 6.1.80 6.1.x ✓ 6.6.19 6.6.x ✓ 6.7.7 6.7.x ✓ 6.8

References

5 total

Kernel Git
https://git.kernel.org/stable/c/012df10717da02367aaf92c65f9c89db206c15f4

Patch
Kernel Git
https://git.kernel.org/stable/c/4c167af9f6b5ae4a5dbc243d5983c295ccc2e43c

Patch
Kernel Git
https://git.kernel.org/stable/c/558b00a30e05753a62ecc7e05e939ca8f0241148

Patch
Kernel Git
https://git.kernel.org/stable/c/670548c8db44d76e40e1dfc06812bca36a61e9ae

Patch
Kernel Git
https://git.kernel.org/stable/c/9e0f0430389be7696396c62f037be4bf72cf93e3

Patch

Details

CVE ID CVE-2024-27403

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-17

Modified 2025-09-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27403?

CVE-2024-27403 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.16 onward and has been patched in 5.15.150, 6.1.80, 6.6.19 and others. CVE-2024-27403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27403?

CVE-2024-27403 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-2024-27403?

Yes. CVE-2024-27403 has been patched. Fixed versions include 5.15.150, 6.1.80, 6.6.19 and others. If you are running Linux kernel 4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27403 actively exploited?

No. CVE-2024-27403 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.