CVE-2022-48755

Kernel crash via unsupported PowerPC64 BPF instruction

Published Jun 20, 2024 · Updated May 11, 2026

Denial of service in Linux kernel PowerPC64 BPF JIT code allows attackers to crash systems during byte-order conversion. The JIT emitter uses the ldbrx instruction for BPF_FROM_LE and BPF_FROM_BE operations without first confirming that the processor implements ISA v2.06. The published reproducer loads test_bpf as a kernel module, so that path requires sufficient local privileges; affected execution ends in an illegal-instruction kernel crash.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
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

Denial of service in Linux kernel PowerPC64 BPF JIT code allows attackers to crash systems during byte-order conversion. The JIT emitter uses the ldbrx instruction for BPF_FROM_LE and BPF_FROM_BE operations without first confirming that the processor implements ISA v2.06. The published reproducer loads test_bpf as a kernel module, so that path requires sufficient local privileges; affected execution ends in an illegal-instruction kernel crash.

The record

CVE
CVE-2022-48755
Published
Jun 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

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

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=156d0e290e969caba25f1851c52417c14d141b24 <129c71829d7f46423d95c19e8d87ce956d4c6e1c
  2. Affected versionversion=156d0e290e969caba25f1851c52417c14d141b24 <3bfbc00587dc883eaed383558ae512a351c2cd09
  3. Affected versionversion=156d0e290e969caba25f1851c52417c14d141b24 <3f5f766d5f7f95a69a630da3544a1a0cee1cdddf
  4. Affected versionversion=156d0e290e969caba25f1851c52417c14d141b24 <aaccfeeee1630b155e8ff0d6c449d3de1ef86e73
  5. Affected versionversion=4.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=156d0e290e969caba25f1851c52417c14d141b24 <129c71829d7f46423d95c19e8d87ce956d4c6e1c; version=156d0e290e969caba25f1851c52417c14d141b24 <3bfbc00587dc883eaed383558ae512a351c2cd09; version=156d0e290e969caba25f1851c52417c14d141b24 <3f5f766d5f7f95a69a630da3544a1a0cee1cdddf; version=156d0e290e969caba25f1851c52417c14d141b24 <aaccfeeee1630b155e8ff0d6c449d3de1ef86e73; version=4.8

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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

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