CVE-2026-23460Public exploit

Local kernel crash via repeated ROSE connect

Published Apr 3, 2026 · Updated Apr 3, 2026

NULL pointer dereference in affected Linux Kernel releases allows local users to crash the kernel through repeated ROSE socket connections. rose_connect() accepts a second connect() during TCP_SYN_SENT, overwrites rose->neighbour with NULL, and leaves rose_release() to pass it into rose_transmit_link(). A local low-privilege user must open and reconnect a ROSE socket; the demonstrated consequence is a kernel crash and service interruption.

CVSS severity5.5
Medium
EPSS probability0.12%
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 affected Linux Kernel releases allows local users to crash the kernel through repeated ROSE socket connections. rose_connect() accepts a second connect() during TCP_SYN_SENT, overwrites rose->neighbour with NULL, and leaves rose_release() to pass it into rose_transmit_link(). A local low-privilege user must open and reconnect a ROSE socket; the demonstrated consequence is a kernel crash and service interruption.

The record

CVE
CVE-2026-23460
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c3e8bff808f17ad37a51d8e719eed22c7863120
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c9fb70a206a8734e10468ecc24d57c7596cf64e
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <508f49ccbe0329641bb681f7d0052bb4e5943252
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a12254050e3050f1011cd24f3b880a6882d0139d
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c2ab74c12932e52cfa1e7e4582d42b0c8bec96c7
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e1f0a18c9564cdb16523c802e2c6fe5874e3d944
  7. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c3e8bff808f17ad37a51d8e719eed22c7863120; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c9fb70a206a8734e10468ecc24d57c7596cf64e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <508f49ccbe0329641bb681f7d0052bb4e5943252; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a12254050e3050f1011cd24f3b880a6882d0139d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c2ab74c12932e52cfa1e7e4582d42b0c8bec96c7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e1f0a18c9564cdb16523c802e2c6fe5874e3d944; version=2.6.12

Published CVSS scores

5.5NIST NVDCVSS: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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

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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