CVE-2026-89479High· 7.0▾ TwilightA flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could send a specially crafted series of SCTP packets, leading to a use-after-free vulnerability. This occurs when the ker…
▾ 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
— → 9.8
none → critical
9.8 → 5.9
critical → medium
5.9 → 9.8
medium → critical
0.2% → 0.5%
Last analysed / modified upstream
9.8 → 7
critical → high
A flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could send a specially crafted series of SCTP packets, leading to a use-after-free vulnerability. This occurs when the kernel attempts to access memory that has already been deallocated, which could result in a denial of service.
kernel: sctp: stop processing a packet once its association is deleted — rated Important by Red Hat. Released 2026-09-11, updated 2026-09-18.
Affected:
No fix planned:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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