What is CVE-2024-35840?

CVE-2024-35840 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2024-35840 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-35840?

CVE-2024-35840 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-2024-35840?

No patch is currently available for CVE-2024-35840. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2024-35840 actively exploited?

CVE-2024-35840 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-35840

Medium

In the Linux kernel, the following vulnerability has been resolved: mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect() subflow_finish_connect() uses four fields (backup, join_id, thmac, none) that may contain garbage unless OPTION_MPTCP_MPJ_SYNACK has been set in mptcp_parse_option()

Package Linux Kernel

Published 2024-05-17

Last modified 2025-09-24

CVSS version 3.1

Patch available

Awaiting data

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

References

The following references provide additional information about CVE-2024-35840 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/413b913507326972135d2977975dbff8b7f2c453
Patch
Kernel patch commit
https://git.kernel.org/stable/c/51e4cb032d49ce094605f27e45eabebc0408893c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/76e8de7273a22a00d27e9b8b7d4d043d6433416a
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2024-35840

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-17

Modified 2025-09-24

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2024-35840?

CVE-2024-35840 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2024-35840 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-35840?

CVE-2024-35840 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-2024-35840?

No patch is currently available for CVE-2024-35840. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2024-35840 actively exploited?

No — CVE-2024-35840 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.