CVE-2022-49619

Availability loss via unreleased SFP allocation

Published Feb 26, 2025 · Updated May 11, 2026

Memory leakage in the Linux kernel allows local users to cause availability loss through a failed SFP device probe. The sfp_probe() path allocates an sfp object with sfp_alloc() but returns without releasing it when devm_add_action() cannot register cleanup. Low-privilege local access is required, and the resulting unreclaimed kernel memory can interrupt service without exposing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in the Linux kernel allows local users to cause availability loss through a failed SFP device probe. The sfp_probe() path allocates an sfp object with sfp_alloc() but returns without releasing it when devm_add_action() cannot register cleanup. Low-privilege local access is required, and the resulting unreclaimed kernel memory can interrupt service without exposing or modifying data.

The record

CVE
CVE-2022-49619
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
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=4.14
  2. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <0a18d802d65cf662644fd1d369c86d84a5630652
  3. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <1545bc727625ea6e8decd717e5d1e8cc704ccf8f
  4. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <204543581a2f26bb3b997a304c0bd06926ba7f15
  5. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <67dc32542a1fb7790d0853cf4a5cf859ac6a2002
  6. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <9ec5a97f327a89031fce6cfc3e95543c53936638
  7. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <ede990cfc42775bd0141e21f37ee365dcaeeb50f
  8. Affected versionversion=73970055450eebc6fc36fd170e56cc45889d0093 <f22ddc8a5278d7fb6369a0aeb0d8775a0aefaaee

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=73970055450eebc6fc36fd170e56cc45889d0093 <0a18d802d65cf662644fd1d369c86d84a5630652; version=73970055450eebc6fc36fd170e56cc45889d0093 <1545bc727625ea6e8decd717e5d1e8cc704ccf8f; version=73970055450eebc6fc36fd170e56cc45889d0093 <204543581a2f26bb3b997a304c0bd06926ba7f15; version=73970055450eebc6fc36fd170e56cc45889d0093 <67dc32542a1fb7790d0853cf4a5cf859ac6a2002; version=73970055450eebc6fc36fd170e56cc45889d0093 <9ec5a97f327a89031fce6cfc3e95543c53936638; version=73970055450eebc6fc36fd170e56cc45889d0093 <ede990cfc42775bd0141e21f37ee365dcaeeb50f; version=73970055450eebc6fc36fd170e56cc45889d0093 <f22ddc8a5278d7fb6369a0aeb0d8775a0aefaaee

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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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-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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