CVE-2022-50717Network attack vector

Kernel memory corruption via unchecked Transfer Tag

Published Dec 24, 2025 · Updated Dec 24, 2025

Out-of-bounds access in Linux kernel nvmet-tcp allows remote attackers to read or write kernel memory via a crafted H2C Data PDU. nvmet_tcp_handle_h2c_data_pdu() uses the attacker-controlled Transfer Tag to index the command array without checking its bounds. The target must expose nvmet-tcp; discovery or allow_any_host connections need no authentication, and exploitation can panic the host.

CVSS severity9.8
Critical
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Linux kernel nvmet-tcp allows remote attackers to read or write kernel memory via a crafted H2C Data PDU. nvmet_tcp_handle_h2c_data_pdu() uses the attacker-controlled Transfer Tag to index the command array without checking its bounds. The target must expose nvmet-tcp; discovery or allow_any_host connections need no authentication, and exploitation can panic the host.

The record

CVE
CVE-2022-50717
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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 <0d150ccd55dbfad36f55855b40b381884c98456e
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <752593d04637ebdc87fd29cba81897f21ae053f0
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6a545ffa2c192b1e6da4a7924edac5ba9f4ea2b
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5bb45f47b37d10f010355686b28c9ebacb361d4
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ec8adf767e1cfa7031f853b8c71ba1963f07df15
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fcf82e4553db911d10234ff2390cfd0e2aa854e4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d150ccd55dbfad36f55855b40b381884c98456e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <752593d04637ebdc87fd29cba81897f21ae053f0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6a545ffa2c192b1e6da4a7924edac5ba9f4ea2b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5bb45f47b37d10f010355686b28c9ebacb361d4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ec8adf767e1cfa7031f853b8c71ba1963f07df15; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fcf82e4553db911d10234ff2390cfd0e2aa854e4

Published CVSS scores

9.8Linux Kernel CVE TeamCVSS:3.1/AV:N/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

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 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

T1210Exploitation of Remote Services

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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