CVE-2026-89477High· 7.0▾ TwilightA flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. This vulnerability occurs when the kernel attempts to complete a stream reconfiguration request that has not been fully transmitted…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0.1 · 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%
— → 5.9
none → medium
— → 5.9
none → medium
— → 7.5
none → high
7.5 → 5.9
high → medium
5.9 → 7.5
medium → high
0.2% → 0.5%
Last analysed / modified upstream
7.5 → 7
A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. This vulnerability occurs when the kernel attempts to complete a stream reconfiguration request that has not been fully transmitted, leading to a null pointer dereference. An unprivileged local user or a remote attacker could exploit this by triggering specific stream reset or reconfiguration requests, causing the kernel to panic and resulting in a denial of service.
kernel: sctp: fix NULL deref on untransmitted RECONF completion — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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