CVE-2026-89482High· 8.8▾ TwilightA flaw was found in the nvme-tcp module of the Linux kernel. This vulnerability arises from improper handling of C2HData for REQ_OP_WRITE_ZEROES commands, where the system fails to adequately validate the data length. A remote attacker cou…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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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% → 0.8%
7 → 9.8
high → critical
Last analysed / modified upstream
9.8 → 8.8
critical → high
A flaw was found in the nvme-tcp module of the Linux kernel. This vulnerability arises from improper handling of C2HData for REQ_OP_WRITE_ZEROES commands, where the system fails to adequately validate the data length. A remote attacker could exploit this by sending specially crafted C2HData, leading to a wild-memory-access. This memory corruption can cause a kernel crash, resulting in a Denial of Service (DoS) for the affected system.
kernel: nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-24.
Affected:
No fix planned:
Not affected:
Fix deferred
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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