CVE-2026-89476High· 7.0▾ TwilightA flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could exploit this by sending specially crafted duplicate RECONF responses. This action can cause an underflow in the `str…
▾ 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.
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
— → 7.5
none → high
Last analysed / modified upstream
7.5 → 5.9
high → medium
5.9 → 7.5
medium → high
7.5 → 7
0.2% → 0.7%
A flaw was found in the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could exploit this by sending specially crafted duplicate RECONF responses. This action can cause an underflow in the stream->outcnt counter, potentially leading to unexpected system behavior or a denial of service (DoS) condition.
kernel: sctp: fix stream->outcnt underflow on duplicate RECONF responses — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Affected
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-90996Medium· 4.0A flaw was found in sssd
CVE-2026-80948Medium· 5.5kernel: wifi: iwlwifi: dvm: fix memory leak in iwl_op_mode_dvm_start() (CVE-2026-80948)
CVE-2026-80936Medium· 5.5kernel: wifi: mt76: mt7925: cancel mlo_pm_work on stop (CVE-2026-80936)
CVE-2026-80947High· 7.0kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop (CVE-2026-80947)
CVE-2026-80980Medium· 5.5kernel: net/smc: stop killed, freed and out_of_sync sharing a byte (CVE-2026-80980)
CVE-2026-80981High· 7.0kernel: net/smc: fix use-after-free of the LLC qentry in smc_llc_srv_add_link() (CVE-2026-80981)