CVE-2024-46737Network attack vector

Kernel crash via stale command count

Published Sep 18, 2024 · Updated Aug 5, 2026

NULL pointer dereference in the Linux nvmet-tcp target allows remote attackers to crash the kernel via an NVMe Connect capsule. nvmet_tcp_alloc_cmds() leaves queue->nr_cmds nonzero when command allocation fails, so nvmet_tcp_release_queue_work() iterates a NULL command array and dereferences cmd->req.cmd. An unauthenticated peer with TCP reachability to a configured NVMe-over-TCP target can trigger a kernel oops or, when panic-on-oops is enabled, a full system panic.

CVSS severity7.5
High
EPSS probability0.76%
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 nvmet-tcp target allows remote attackers to crash the kernel via an NVMe Connect capsule. nvmet_tcp_alloc_cmds() leaves queue->nr_cmds nonzero when command allocation fails, so nvmet_tcp_release_queue_work() iterates a NULL command array and dereferences cmd->req.cmd. An unauthenticated peer with TCP reachability to a configured NVMe-over-TCP target can trigger a kernel oops or, when panic-on-oops is enabled, a full system panic.

The record

CVE
CVE-2024-46737
Published
Sep 18, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.0
  2. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <03e1fd0327fa5e2174567f5fe9290fe21d21b8f4
  3. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <489f2913a63f528cfe3f21722583fb981967ecda
  4. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <50632b877ce55356f5d276b9add289b1e7ddc683
  5. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <5572a55a6f830ee3f3a994b6b962a5c327d28cb3
  6. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <6c04d1e3ab22cc5394ef656429638a5947f87244
  7. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <7957c731fc2b23312f8935812dee5a0b14b04e2d
  8. Affected versionversion=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <91dad30c5607e62864f888e735d0965567827bdf

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.0; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <03e1fd0327fa5e2174567f5fe9290fe21d21b8f4; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <489f2913a63f528cfe3f21722583fb981967ecda; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <50632b877ce55356f5d276b9add289b1e7ddc683; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <5572a55a6f830ee3f3a994b6b962a5c327d28cb3; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <6c04d1e3ab22cc5394ef656429638a5947f87244; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <7957c731fc2b23312f8935812dee5a0b14b04e2d; version=872d26a391da92ed8f0c0f5cb5fef428067b7f30 <91dad30c5607e62864f888e735d0965567827bdf

Published CVSS scores

7.5Linux Kernel CVE TeamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST National Vulnerability DatabaseCVSS: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

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

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Your stack

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