CVE-2022-50671Network attack vector

Host crash via uninitialized RDMA task callback

Published Dec 9, 2025 · Updated Aug 5, 2026

NULL-pointer dereference in Linux kernel RDMA/rxe allows remote attackers to crash the host through unauthenticated Soft-RoCE connections. When rxe_queue_init fails during queue-pair creation, rxe_qp_init_req leaves qp->req.task.func and arg unset, yet rxe_qp_do_cleanup passes the task to __rxe_do_task, which calls the NULL callback. Reachability requires an enabled Soft-RoCE network service such as SMB Direct or nvmet-rdma and enough attacker-driven connections to exhaust queue allocation; the demonstrated consequence is a repeatable kernel oops or panic without data disclosure or corruption.

CVSS severity7.5
High
EPSS probability0.95%
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 Linux kernel RDMA/rxe allows remote attackers to crash the host through unauthenticated Soft-RoCE connections. When rxe_queue_init fails during queue-pair creation, rxe_qp_init_req leaves qp->req.task.func and arg unset, yet rxe_qp_do_cleanup passes the task to __rxe_do_task, which calls the NULL callback. Reachability requires an enabled Soft-RoCE network service such as SMB Direct or nvmet-rdma and enough attacker-driven connections to exhaust queue allocation; the demonstrated consequence is a repeatable kernel oops or panic without data disclosure or corruption.

The record

CVE
CVE-2022-50671
Published
Dec 9, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE 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

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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=4.8
  2. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <0d773c58d702f0a7c16ee8d69617fd2c28350795
  3. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <3b8752f086eb6865cc3662ad13249b03024501e5
  4. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <48cd7098e71735ccafa0b3cf27c53924f9cb5b2f
  5. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <9c5dd6993c794703e74c6ba17ac78ca0211ef940
  6. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <a625ca30eff806395175ebad3ac1399014bdb280
  7. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <bb33fa65da77f5f02dbee6f25cebaeedfcd70028
  8. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <cdce36a88def550773142a34ef727a830cad96a8
  9. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <eca119693010032d6cc6e7e9b4fb2c363c7e12ce
  10. Affected versionversion=8700e3e7c4857d28ebaa824509934556da0b3e76 <f2f405af70e6f0419e718d23fa304798a5405c41

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.8; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <0d773c58d702f0a7c16ee8d69617fd2c28350795; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <3b8752f086eb6865cc3662ad13249b03024501e5; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <48cd7098e71735ccafa0b3cf27c53924f9cb5b2f; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <9c5dd6993c794703e74c6ba17ac78ca0211ef940; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <a625ca30eff806395175ebad3ac1399014bdb280; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <bb33fa65da77f5f02dbee6f25cebaeedfcd70028; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <cdce36a88def550773142a34ef727a830cad96a8; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <eca119693010032d6cc6e7e9b4fb2c363c7e12ce; version=8700e3e7c4857d28ebaa824509934556da0b3e76 <f2f405af70e6f0419e718d23fa304798a5405c41

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

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)
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.

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Technologies

Your stack

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Your stack

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