CVE-2023-54085 (GCVE-0-2023-54085)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-10-15 21:41
VLAI
Title
mptcp: fix NULL pointer dereference on fastopen early fallback
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix NULL pointer dereference on fastopen early fallback In case of early fallback to TCP, subflow_syn_recv_sock() deletes the subflow context before returning the newly allocated sock to the caller. The fastopen path does not cope with the above unconditionally dereferencing the subflow context.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:38 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6638 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 36b122baf6a8bd46b4a591f12f4ed17b22257408 , < 95135835519b0ab931c39908b2c99e9fb3c9068b (git)
Affected: 36b122baf6a8bd46b4a591f12f4ed17b22257408 , < c0ff6f6da66a7791a32c0234388b1bdc00244917 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.2.12 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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