CVE-2026-80995Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's MCTP (Message Control Transport Protocol) networking implementation. This vulnerability arises because the `mctp_route_lookup()` function accesses a route device without holding a persistent reference…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.7
none → medium
— → 7.8
none → high
Last analysed / modified upstream
7.8 → 4.7
high → medium
7.8 → 4.7
high → medium
4.7 → 5.5
A flaw was found in the Linux kernel's MCTP (Message Control Transport Protocol) networking implementation. This vulnerability arises because the mctp_route_lookup() function accesses a route device without holding a persistent reference, allowing the device to be deallocated while still in use. A local, unprivileged user can exploit this condition on the receive/forwarding path, leading to a use-after-free. This can result in memory corruption or a denial of service (DoS).
kernel: net: mctp: hold a reference to the route device in mctp_route_lookup() — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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