CVE-2022-48801

Kernel memory corruption via IIO buffer use-after-free

Published Jul 16, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel IIO buffer ioctl allows local users to corrupt kernel memory through a failed descriptor copy. The IIO_BUFFER_GET_FD_IOCTL error path calls put_unused_fd and frees its buffer after anon_inode_getfd has published the descriptor, leaving file->private_data dangling. Access to an IIO device node is required; reusing the installed descriptor can disclose or alter kernel memory or crash the host.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel IIO buffer ioctl allows local users to corrupt kernel memory through a failed descriptor copy. The IIO_BUFFER_GET_FD_IOCTL error path calls put_unused_fd and frees its buffer after anon_inode_getfd has published the descriptor, leaving file->private_data dangling. Access to an IIO device node is required; reusing the installed descriptor can disclose or alter kernel memory or crash the host.

The record

CVE
CVE-2022-48801
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.13
  2. Affected versionversion=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <202071d2518537866d291aa7cf26af54e674f4d4
  3. Affected versionversion=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <b7f54894aa7517d2b6c797a499b9f491e9db9083
  4. Affected versionversion=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <c72ea20503610a4a7ba26c769357d31602769c01

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <202071d2518537866d291aa7cf26af54e674f4d4; version=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <b7f54894aa7517d2b6c797a499b9f491e9db9083; version=f73f7f4da581875f9b1f2fb8ebd1ab15ed634488 <c72ea20503610a4a7ba26c769357d31602769c01

Published CVSS scores

7.8GitHub Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free
T1068Exploitation for Privilege Escalation

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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