CVE-2022-49787

Resource exhaustion via SDHCI PCI reference leak

Published May 1, 2025 · Updated May 11, 2026

Memory leak in the Linux kernel's SDHCI PCI driver allows local users to exhaust resources through the vulnerable device-probe path. The amd_probe function calls pci_get_device, which increments the returned pci_dev reference count, but returns without a matching pci_dev_put. The published assessment requires low privileges and limits the consequence to availability loss; no public source documents a reliable software-only trigger.

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

Memory leak in the Linux kernel's SDHCI PCI driver allows local users to exhaust resources through the vulnerable device-probe path. The amd_probe function calls pci_get_device, which increments the returned pci_dev reference count, but returns without a matching pci_dev_put. The published assessment requires low privileges and limits the consequence to availability loss; no public source documents a reliable software-only trigger.

The record

CVE
CVE-2022-49787
Published
May 1, 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. 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=4.4
  2. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <222cfa0118aa68687ace74aab8fdf77ce8fbd7e6
  3. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <27f712cd47d65e14cd52cc32a23d42aeef583d5d
  4. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <35bca18092685b488003509fef7055aa2d4f2ebc
  5. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <4423866d31a06a810db22062ed13389416a66b22
  6. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <5dbd6378dbf96787d6dbcca44156c511ae085ea3
  7. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <7570e5b5419ffd34b6dc45a88c51e113a9a187e3
  8. Affected versionversion=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <a99a547658e5d451f01ed307426286716b6f01bf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <222cfa0118aa68687ace74aab8fdf77ce8fbd7e6; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <27f712cd47d65e14cd52cc32a23d42aeef583d5d; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <35bca18092685b488003509fef7055aa2d4f2ebc; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <4423866d31a06a810db22062ed13389416a66b22; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <5dbd6378dbf96787d6dbcca44156c511ae085ea3; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <7570e5b5419ffd34b6dc45a88c51e113a9a187e3; version=659c9bc114a810b3a3c1e50585cc57f1312a6d60 <a99a547658e5d451f01ed307426286716b6f01bf

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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

See the directory against your own environment.

Your stack

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