CVE-2022-49875

Utility crash via unchecked missing pathname

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in affected Linux bpftool builds allows local users to crash the utility by omitting the FILE argument. The pin command passes the absent pathname as a null name through do_pin_fd to mount_bpffs_for_pin, which calls strlen without validating it. The reported consequence is termination of that bpftool process, with no kernel crash, data access, or privilege gain reported.

CVSS severity5.5
Medium
EPSS probability0.21%
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 bpftool builds allows local users to crash the utility by omitting the FILE argument. The pin command passes the absent pathname as a null name through do_pin_fd to mount_bpffs_for_pin, which calls strlen without validating it. The reported consequence is termination of that bpftool process, with no kernel crash, data access, or privilege gain reported.

The record

CVE
CVE-2022-49875
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE 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=5.7
  2. Affected versionversion=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <34de8e6e0e1f66e431abf4123934a2581cb5f133
  3. Affected versionversion=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a
  4. Affected versionversion=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <8c80b2fca4112d724dde477aed13f7b0510a2792
  5. Affected versionversion=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <da5161ba94c5e9182c301dd4f09c94f715c068bd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <34de8e6e0e1f66e431abf4123934a2581cb5f133; version=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a; version=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <8c80b2fca4112d724dde477aed13f7b0510a2792; version=75a1e792c335b5c6d7fdb1014da47aeb64c5944f <da5161ba94c5e9182c301dd4f09c94f715c068bd

Published CVSS scores

5.5CISA-ADPCVSS: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 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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