CVE-2025-68782Network attack vector

Remote kernel crash via NULL CDB pointer

Published Jan 13, 2026 · Updated Jan 13, 2026

NULL pointer dereference in the Linux Kernel SCSI target allows remote attackers to crash hosts via variable-length command descriptor blocks. When allocation of cmd->t_task_cdb fails in target_cmd_init_cdb(), the error path passes the unchanged NULL pointer to memcpy instead of restoring the embedded buffer. A reachable iSCSI target using permissive unauthenticated sessions is exposed; the fault can produce a kernel oops or panic without data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux Kernel SCSI target allows remote attackers to crash hosts via variable-length command descriptor blocks. When allocation of cmd->t_task_cdb fails in target_cmd_init_cdb(), the error path passes the unchanged NULL pointer to memcpy instead of restoring the embedded buffer. A reachable iSCSI target using permissive unauthenticated sessions is exposed; the fault can produce a kernel oops or panic without data disclosure or modification.

The record

CVE
CVE-2025-68782
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=5.8
  2. Affected versionversion=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <0260ad551b0815eb788d47f32899fbcd65d6f128
  3. Affected versionversion=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <0d36db68fdb8a3325386fd9523b67735f944e1f3
  4. Affected versionversion=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <5053eab38a4c4543522d0c320c639c56a8b59908
  5. Affected versionversion=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <8727663ded659aad55eef21e3864ebf5a4796a96
  6. Affected versionversion=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <8edbb9e371af186b4cf40819dab65fafe109df4d

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.8; version=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <0260ad551b0815eb788d47f32899fbcd65d6f128; version=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <0d36db68fdb8a3325386fd9523b67735f944e1f3; version=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <5053eab38a4c4543522d0c320c639c56a8b59908; version=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <8727663ded659aad55eef21e3864ebf5a4796a96; version=9e95fb805dc043cc8ed878a08d1583e4097a5f80 <8edbb9e371af186b4cf40819dab65fafe109df4d

Published CVSS scores

3.3Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5Linux Kernel CVE TeamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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Your stack

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