CVE-2024-35840
CVE-2024-35840 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-35644
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
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()
Frequently asked questions
- What is CVE-2024-35840?
- 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()
- How severe is CVE-2024-35840?
- CVE-2024-35840 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2024-35840 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-35840?
- CVE-2024-35840 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-35840?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2024-35840 have an EU (EUVD) identifier?
- Yes. CVE-2024-35840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-35644.
- When was CVE-2024-35840 published?
- CVE-2024-35840 was published on 2024-05-17 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/413b913507326972135d2977975dbff8b7f2c453
- https://git.kernel.org/stable/c/51e4cb032d49ce094605f27e45eabebc0408893c
- https://git.kernel.org/stable/c/76e8de7273a22a00d27e9b8b7d4d043d6433416a
- https://git.kernel.org/stable/c/ad3e8f5c3d5c53841046ef7a947c04ad45a20721
- https://git.kernel.org/stable/c/be1d9d9d38da922bd4beeec5b6dd821ff5a1dfeb
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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