CVE-2025-71236Network attack vector

System crash via NULL request-pointer dereference

Published Feb 18, 2026 · Updated Feb 18, 2026

NULL pointer dereference in the Linux Kernel qla2xxx driver allows remote attackers to crash systems during fabric asynchronous scans. The qla_fab_async_scan cleanup path accesses resources through its srb_t sp argument without first confirming that the pointer is non-NULL. Exposure requires the qla2xxx driver and a Fibre Channel fabric event that initiates the asynchronous scan; the reported consequence is a kernel crash.

CVSS severity7.5
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in the Linux Kernel qla2xxx driver allows remote attackers to crash systems during fabric asynchronous scans. The qla_fab_async_scan cleanup path accesses resources through its srb_t sp argument without first confirming that the pointer is non-NULL. Exposure requires the qla2xxx driver and a Fibre Channel fabric event that initiates the asynchronous scan; the reported consequence is a kernel crash.

The record

CVE
CVE-2025-71236
Published
Feb 18, 2026
Updated
Feb 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1a9585e4c58d1f1662b3ca46110ed4f583082ce5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <40ae93668226b610edb952c6036f607a61750b57
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <944378ead9a48d5d50e9e3cc85e4cdb911c37ca1
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <949010291bb941d53733ed08a33454254d9afb1b

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1a9585e4c58d1f1662b3ca46110ed4f583082ce5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <40ae93668226b610edb952c6036f607a61750b57; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <944378ead9a48d5d50e9e3cc85e4cdb911c37ca1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <949010291bb941d53733ed08a33454254d9afb1b

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo