CVE-2022-48746

Kernel crash via mismatched VF representor netevent

Published Jun 20, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel mlx5e bond handler allows local users to crash the kernel through a mismatched VF representor. mlx5e_rep_esw_bond_netevent checks that a network device is a VF representor but fails to verify that it belongs to the bond's physical device, then accesses uninitialized private data. Low-privileged local access and an mlx5e SR-IOV representor bonding configuration are required; the demonstrated consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.24%
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 kernel mlx5e bond handler allows local users to crash the kernel through a mismatched VF representor. mlx5e_rep_esw_bond_netevent checks that a network device is a VF representor but fails to verify that it belongs to the bond's physical device, then accesses uninitialized private data. Low-privileged local access and an mlx5e SR-IOV representor bonding configuration are required; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2022-48746
Published
Jun 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.8
  2. Affected versionversion=7e51891a237f9ea319f53f9beb83afb0077d88e6 <4fad499d7fece448e7230d5e5b92f6d8a073e0bb
  3. Affected versionversion=7e51891a237f9ea319f53f9beb83afb0077d88e6 <a01ee1b8165f4161459b5ec4e728bc7130fe8cd4
  4. Affected versionversion=7e51891a237f9ea319f53f9beb83afb0077d88e6 <ec41332e02bd0acf1f24206867bb6a02f5877a62
  5. Affected versionversion=7e51891a237f9ea319f53f9beb83afb0077d88e6 <fe70126da6063c29ca161cdec7ad1dae9af836b3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=7e51891a237f9ea319f53f9beb83afb0077d88e6 <4fad499d7fece448e7230d5e5b92f6d8a073e0bb; version=7e51891a237f9ea319f53f9beb83afb0077d88e6 <a01ee1b8165f4161459b5ec4e728bc7130fe8cd4; version=7e51891a237f9ea319f53f9beb83afb0077d88e6 <ec41332e02bd0acf1f24206867bb6a02f5877a62; version=7e51891a237f9ea319f53f9beb83afb0077d88e6 <fe70126da6063c29ca161cdec7ad1dae9af836b3

Published CVSS scores

5.5UbuntuCVSS: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

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

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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