CVE-2026-89780Hinoki check available

Local kernel panic via unset deaggregated-frame device pointer

Published Sep 16, 2026 · Updated Sep 16, 2026

NULL pointer dereference in the Qualcomm rmnet driver in Linux allows local users to crash the kernel via a crafted MAP command frame. rmnet_map_deaggregate() allocates each subframe without copying skb->dev, so rmnet_map_send_ack() passes a NULL device to netif_tx_lock(). Exploitation requires an unprivileged user to create user and network namespaces, place an rmnet link over a tap device with ingress deaggregation and MAP commands enabled, and write an aggregated flow-control command; the result is a kernel panic rather than data disclosure or modification.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

NULL pointer dereference in the Qualcomm rmnet driver in Linux allows local users to crash the kernel via a crafted MAP command frame. rmnet_map_deaggregate() allocates each subframe without copying skb->dev, so rmnet_map_send_ack() passes a NULL device to netif_tx_lock(). Exploitation requires an unprivileged user to create user and network namespaces, place an rmnet link over a tap device with ingress deaggregation and MAP commands enabled, and write an aggregated flow-control command; the result is a kernel panic rather than data disclosure or modification.

The record

CVE
CVE-2026-89780
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <200460a0793dc6af97d3b36d92ac245350ac26fc
  2. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <4bcef54e4a3355a62d9ad90729fe563435ec76c3
  3. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <5aaa7409c1b4ca4c60d66e2afa99703bf4eb7ddd
  4. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <7abe769e72c792e5f9eb273813eb3ecd8389854c
  5. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <9b78ab84ddf97c06a8567edb62b6c0fd582f9a62
  6. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <9d18c6c6cd1666b2cb7915cad052e22abf520997
  7. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <a66734a1c5e36525ea07e9f4547fddc51e916de3
  8. Affected versionversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <b14c22c31d9e30f38ea1693ac06d318f32258f5d
  9. Affected versionversion=4.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <200460a0793dc6af97d3b36d92ac245350ac26fc; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <4bcef54e4a3355a62d9ad90729fe563435ec76c3; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <5aaa7409c1b4ca4c60d66e2afa99703bf4eb7ddd; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <7abe769e72c792e5f9eb273813eb3ecd8389854c; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <9b78ab84ddf97c06a8567edb62b6c0fd582f9a62; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <9d18c6c6cd1666b2cb7915cad052e22abf520997; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <a66734a1c5e36525ea07e9f4547fddc51e916de3; version=378e25357ac78ad02fbc98bec9b4e3baaa916c5c <b14c22c31d9e30f38ea1693ac06d318f32258f5d; version=4.17

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectorlocal
Privilegesauthenticated
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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