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
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
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%
— → 9.8
none → critical
9.8 → 5.9
critical → medium
5.9 → 9.8
medium → critical
9.8 → 7
critical → high
0.2% → 0.7%
7 → 9.8
high → critical
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 2026-10-20.
Affected:
Fixed:
No fix planned:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.
Because of this proactive approach, a patch may be associa… https://access.redhat.com/errata/RHSA-2026:85773 For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.
Because of this proactive approach, a patch may be associa… https://access.redhat.com/errata/RHSA-2026:85774
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-74264Medium· 4.7kernel: net: watchdog: fix refcount tracking races (CVE-2026-74264)
CVE-2026-109729Medium· 5.4Use-after-free in the JavaScript Engine: JIT component
CVE-2026-64564Critical· 9.8In the Linux kernel, the following vulnerability has been resolved: sctp: don't free the ASCONF's own transport in DEL-IP processing sctp_process_asconf() caches the transport the ASCONF chunk is processed against in asconf->transport …
CVE-2026-53384High· 7.0In the Linux kernel, the following vulnerability has been resolved: serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails dw8250_probe() registers the 8250 port via serial8250_register_8250_port() and then, if the devi…
CVE-2026-80764Medium· 4.7kernel: Bluetooth: hci_event: fix LE list UAF on reset (CVE-2026-80764)
CVE-2026-64554High· 7.0kernel: netfilter: bridge: fix stale prevhdr pointer in br_ip6_fragment() (CVE-2026-64554)