CVE-2022-49525

Kernel resource leak via premature PCI disable

Published Feb 26, 2025 · Updated May 11, 2026

Resource leak in the Linux cx25821 media driver allows local users to impair availability by removing the affected kernel module. The cx25821_finidev function disables the PCI device before freeing its IRQ, leaving a nonempty procfs IRQ directory and leaking its entry. Reaching the flaw requires local permission to remove the cx25821 module; the documented result is a kernel warning, leaked IRQ state, and availability impact.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux cx25821 media driver allows local users to impair availability by removing the affected kernel module. The cx25821_finidev function disables the PCI device before freeing its IRQ, leaving a nonempty procfs IRQ directory and leaking its entry. Reaching the flaw requires local permission to remove the cx25821 module; the documented result is a kernel warning, leaked IRQ state, and availability impact.

The record

CVE
CVE-2022-49525
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <005fd553f5f10fe8618d92f94ad10f9051eac331
  2. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <1f0fc1dfb5fdd456657519a97fab83691b96c6a0
  3. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <2203436a4d24302871617373a7eb21bc17e38762
  4. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <222292930c8ecc3516e03ec1f9fa8448be7ff496
  5. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <258639bc55a586ee6df92d89786ccf1c71546d70
  6. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <3f94169affa33c9db4a439d88f09cb2ed3a33332
  7. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <4d6295b6d986476232332fffd08575b185f90d81
  8. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <5beb85ff7d005ddb7bf604a4f2dc76f01b84b318
  9. Affected versionversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <9d92291698e5cc35a2b8a1106a01ddd7d60ade2d
  10. Affected versionversion=2.6.32

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <005fd553f5f10fe8618d92f94ad10f9051eac331; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <1f0fc1dfb5fdd456657519a97fab83691b96c6a0; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <2203436a4d24302871617373a7eb21bc17e38762; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <222292930c8ecc3516e03ec1f9fa8448be7ff496; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <258639bc55a586ee6df92d89786ccf1c71546d70; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <3f94169affa33c9db4a439d88f09cb2ed3a33332; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <4d6295b6d986476232332fffd08575b185f90d81; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <5beb85ff7d005ddb7bf604a4f2dc76f01b84b318; version=02b20b0b4cde011f7ad6b5363fb88b93f7ad4e5b <9d92291698e5cc35a2b8a1106a01ddd7d60ade2d; version=2.6.32

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS: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

No sourced classifications are available.

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

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Your stack

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