CVE-2025-40331
sctp: Prevent TOCTOU out-of-bounds write
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
09 Dec 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
sctp: Prevent TOCTOU out-of-bounds write
For the following path not holding the sock lock,
sctp_diag_dump() -> sctp_for_each_endpoint() -> sctp_ep_dump()
make sure not to exceed bounds in case the address list has grown
between buffer allocation (time-of-check) and write (time-of-use).
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2fe08fcaacb7eb019fa9c81db39b2214de216677https://git.kernel.org/stable/c/3006959371007fc2eae4a078f823c680fa52de1ahttps://git.kernel.org/stable/c/584307275b2048991b2e8984962189b6cc0a9b85https://git.kernel.org/stable/c/72e3fea68eac8d088e44c3dd954e843478e9240ehttps://git.kernel.org/stable/c/89eac1e150dbd42963e13d23828cb8c4e0763196https://git.kernel.org/stable/c/95aef86ab231f047bb8085c70666059b58f53c09https://git.kernel.org/stable/c/b106a68df0650b694b254427cd9250c04500edd3https://git.kernel.org/stable/c/c9119f243d9c0da3c3b5f577a328de3e7ffd1b42