CVE-2022-49757

Local denial of service via probe memory leak

Published Mar 27, 2025 · Updated May 11, 2026

Memory leak in Linux 3.6 through 6.1.8 allows local users to exhaust memory when Highbank EDAC probe setup fails during initialization. The highbank_mc_probe function allocates EDAC controller memory with edac_mc_alloc, then returns after devres_open_group fails without calling edac_mc_free. Reaching the flaw requires local low-privileged access and execution of the driver's probe error path; repeated failures can interrupt service through memory exhaustion.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Linux 3.6 through 6.1.8 allows local users to exhaust memory when Highbank EDAC probe setup fails during initialization. The highbank_mc_probe function allocates EDAC controller memory with edac_mc_alloc, then returns after devres_open_group fails without calling edac_mc_free. Reaching the flaw requires local low-privileged access and execution of the driver's probe error path; repeated failures can interrupt service through memory exhaustion.

The record

CVE
CVE-2022-49757
Published
Mar 27, 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. Mar 27, 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

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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=3.6
  2. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <0db40e23b56d217eebd385bebb64057ef764b2c7
  3. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <329fbd260352a7b9a83781d8b8bd96f95844a51f
  4. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <8d23f5d25264beb223ee79cdb530b88c237719fc
  5. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <b7863ef8a8f0fee96b4eb41211f4918c0e047253
  6. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <caffa7fed1397d1395052272c93900176de86557
  7. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <e7a293658c20a7945014570e1921bf7d25d68a36
  8. Affected versionversion=a1b01edb274518c7da6d69b84e7558c092282aad <f1b3e23ed8df87d779ee86ac37f379e79a24169a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.6; version=a1b01edb274518c7da6d69b84e7558c092282aad <0db40e23b56d217eebd385bebb64057ef764b2c7; version=a1b01edb274518c7da6d69b84e7558c092282aad <329fbd260352a7b9a83781d8b8bd96f95844a51f; version=a1b01edb274518c7da6d69b84e7558c092282aad <8d23f5d25264beb223ee79cdb530b88c237719fc; version=a1b01edb274518c7da6d69b84e7558c092282aad <b7863ef8a8f0fee96b4eb41211f4918c0e047253; version=a1b01edb274518c7da6d69b84e7558c092282aad <caffa7fed1397d1395052272c93900176de86557; version=a1b01edb274518c7da6d69b84e7558c092282aad <e7a293658c20a7945014570e1921bf7d25d68a36; version=a1b01edb274518c7da6d69b84e7558c092282aad <f1b3e23ed8df87d779ee86ac37f379e79a24169a

Published CVSS scores

5.5NVDCVSS: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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