CVE-2025-68818

Kernel crash via unchecked qla2xxx command-type callback

Published Jan 13, 2026 · Updated Jan 13, 2026

Type confusion in the qla2xxx SCSI driver in the Linux Kernel allows remote attackers to crash target-mode storage hosts. The __qla2x00_abort_all_cmds() path assumes every command is TYPE_SRB and invokes sp->done() without checking sp->cmd_type, so TYPE_TGT_CMD data becomes an invalid callback target. Exploitation requires an active qla2xxx target on the same Fibre Channel or FCoE fabric; crafted FCP traffic can induce reset handling and a kernel oops.

CVSS severity8.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in the qla2xxx SCSI driver in the Linux Kernel allows remote attackers to crash target-mode storage hosts. The __qla2x00_abort_all_cmds() path assumes every command is TYPE_SRB and invokes sp->done() without checking sp->cmd_type, so TYPE_TGT_CMD data becomes an invalid callback target. Exploitation requires an active qla2xxx target on the same Fibre Channel or FCoE fabric; crafted FCP traffic can induce reset handling and a kernel oops.

The record

CVE
CVE-2025-68818
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
adjacent
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

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Is a vulnerable build present?

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

  1. Affected versionversion=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <1c728951bc769b795d377852eae1abddad88635d
  2. Affected versionversion=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <b10ebbfd59a535c8d22f4ede6e8389622ce98dc0
  3. Affected versionversion=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <b57fbc88715b6d18f379463f48a15b560b087ffe
  4. Affected versionversion=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <e9e601b7df58ba0c667baf30263331df2c02ffe1
  5. Affected versionversion=231cfa78ec5badd84a1a2b09465bfad1a926aba1
  6. Affected versionversion=415d614344a4f1bbddf55d724fc7eb9ef4b39aad
  7. Affected versionversion=6.3
  8. Affected versionversion=9189f20b4c5307c0998682bb522e481b4567a8b8
  9. Affected versionversion=cd0a1804ac5bab2545ac700c8d0fe9ae9284c567 <c5c37a821bd1708f26a9522b4a6f47b9f7a20003
  10. Affected versionversion=d6f7377528d2abf338e504126e44439541be8f7d

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <1c728951bc769b795d377852eae1abddad88635d; version=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <b10ebbfd59a535c8d22f4ede6e8389622ce98dc0; version=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <b57fbc88715b6d18f379463f48a15b560b087ffe; version=0367076b0817d5c75dfb83001ce7ce5c64d803a9 <e9e601b7df58ba0c667baf30263331df2c02ffe1; version=231cfa78ec5badd84a1a2b09465bfad1a926aba1; version=415d614344a4f1bbddf55d724fc7eb9ef4b39aad; version=6.3; version=9189f20b4c5307c0998682bb522e481b4567a8b8; version=cd0a1804ac5bab2545ac700c8d0fe9ae9284c567 <c5c37a821bd1708f26a9522b4a6f47b9f7a20003; version=d6f7377528d2abf338e504126e44439541be8f7d

Published CVSS scores

8.8kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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