CVE-2022-49512

Kernel crash via premature device-resource release

Published Feb 26, 2025 · Updated May 11, 2026

Resource-lifetime flaw in the Linux Denali NAND PCI driver allows local users to crash the kernel during a failed device probe. The PCI error path manually unmaps register memory after denali_init has registered a managed interrupt, leaving denali_isr able to write through an unmapped MMIO pointer before the interrupt is released. Reachability requires a Denali PCI NAND controller, a failed probe, and an interrupt during cleanup; the bounded outcome is a kernel page fault and crash.

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

Resource-lifetime flaw in the Linux Denali NAND PCI driver allows local users to crash the kernel during a failed device probe. The PCI error path manually unmaps register memory after denali_init has registered a managed interrupt, leaving denali_isr able to write through an unmapped MMIO pointer before the interrupt is released. Reachability requires a Denali PCI NAND controller, a failed probe, and an interrupt during cleanup; the bounded outcome is a kernel page fault and crash.

The record

CVE
CVE-2022-49512
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

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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=4.17
  2. Affected versionversion=93db446a424cee9387b532995e6b516667079555 <3830dbdfb9a4aec680e43ed80b9f23db7a88eac9
  3. Affected versionversion=93db446a424cee9387b532995e6b516667079555 <3a745b51cddafade99aaea1b93aad31e9614e230
  4. Affected versionversion=93db446a424cee9387b532995e6b516667079555 <3c68daf4a368cd9e63ae5a2145c9e4a6f838c166
  5. Affected versionversion=93db446a424cee9387b532995e6b516667079555 <87149cf9186201a63f0e0b93d9fa93d480bcb771
  6. Affected versionversion=93db446a424cee9387b532995e6b516667079555 <efea1dd176edd17c8252051b7de6957f06efc394

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.17; version=93db446a424cee9387b532995e6b516667079555 <3830dbdfb9a4aec680e43ed80b9f23db7a88eac9; version=93db446a424cee9387b532995e6b516667079555 <3a745b51cddafade99aaea1b93aad31e9614e230; version=93db446a424cee9387b532995e6b516667079555 <3c68daf4a368cd9e63ae5a2145c9e4a6f838c166; version=93db446a424cee9387b532995e6b516667079555 <87149cf9186201a63f0e0b93d9fa93d480bcb771; version=93db446a424cee9387b532995e6b516667079555 <efea1dd176edd17c8252051b7de6957f06efc394

Published CVSS scores

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

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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