CVE-2022-48640Public exploit

Kernel crash via unallocated bonding counter

Published Apr 28, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux kernel 5.14 through 6.0-rc6 allows local users to crash the kernel through bonding mode reconfiguration. bond_rr_gen_slave_id dereferences bonding.rr_tx_counter after a bond created outside round-robin mode switches to round-robin without allocating the counter. Low-privileged local access capable of reconfiguring bonding is required, and transmitting in this state produces a kernel Oops and service interrupt.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in Linux kernel 5.14 through 6.0-rc6 allows local users to crash the kernel through bonding mode reconfiguration. bond_rr_gen_slave_id dereferences bonding.rr_tx_counter after a bond created outside round-robin mode switches to round-robin without allocating the counter. Low-privileged local access capable of reconfiguring bonding is required, and transmitting in this state produces a kernel Oops and service interrupt.

The record

CVE
CVE-2022-48640
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 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

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=5.14
  2. Affected versionversion=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <0e400d602f46360752e4b32ce842dba3808e15e6
  3. Affected versionversion=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <2c8e8ab53acfc78da0b4a65f30cb5d306e7d78f7
  4. Affected versionversion=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <ec3a6f4ffe556a28f6f5028bf7c4412557e7051b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <0e400d602f46360752e4b32ce842dba3808e15e6; version=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <2c8e8ab53acfc78da0b4a65f30cb5d306e7d78f7; version=848ca9182a7d25bb54955c3aab9a3a2742bf9678 <ec3a6f4ffe556a28f6f5028bf7c4412557e7051b

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo