Vulnary
← back to the feed
Critical· 9.8official fix available

CVE-2026-89482

A critical vulnerability in the Linux kernel’s NVMe‑TCP driver could cause a wild‑memory‑access when handling WRITE_ZEROES commands. The issue has been resolved by adding a check for the number of physical segments before using the payload size in the driver’s command setup. This fix is documented in the NVD description.

publishedSep 11, 2026
last modifiedSep 13, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
10th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Oct 13, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Linux kernel installations using the NVMe‑TCP driver

02

Real-world impact

Potential remote code execution or system compromise due to memory corruption

03

Why this severity

CVSS 9.8 indicates critical severity with network‑accessible, low‑complexity attack and high impact on confidentiality, integrity, and availability

04

What to do about it

official fix available
recommended steps
  1. 01Obtain a Linux kernel version that includes commit 25e5cb780e62, which fixes the nvme‑tcp issue.
  2. 02Update the system to that kernel version using the appropriate package manager or installer.
  3. 03Reboot the system to load the updated kernel.

NVD‑referenced kernel commit fixing the vulnerability

05

Timeline

  1. Sep 11, 2026 · 2d ago
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Sep 13, 2026 · 5h ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →