CVE-2022-49419

Kernel memory corruption via stale framebuffer pointer

Published Feb 26, 2025 · Updated May 23, 2026

Use-after-free in Linux vesafb 5.15.41 through 5.15.45, 5.17.9 through 5.17.13, and 5.18 allows local users to corrupt kernel memory. The vesafb_remove function reads info->par after unregister_framebuffer() can free fb_info when .fb_destroy runs first. The flaw requires local low-privileged access, driver removal, and no open fbdev character device; it can corrupt kernel memory.

CVSS severity7.8
High
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

Use-after-free in Linux vesafb 5.15.41 through 5.15.45, 5.17.9 through 5.17.13, and 5.18 allows local users to corrupt kernel memory. The vesafb_remove function reads info->par after unregister_framebuffer() can free fb_info when .fb_destroy runs first. The flaw requires local low-privileged access, driver removal, and no open fbdev character device; it can corrupt kernel memory.

The record

CVE
CVE-2022-49419
Published
Feb 26, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=5.15.41 <5.15.46
  2. Affected versionversion=5.17.9 <5.17.14
  3. Affected versionversion=5.18
  4. Affected versionversion=a1aac13288de2935dc1a9330a93b1ac92f1e2b72 <f605f5558ecc175ec70016a3c15f007cb6386531
  5. Affected versionversion=b3c9a924aab61adbc29df110006aa03afe1a78ba <acde4003efc16480375543638484d8f13f2e99a3
  6. Affected versionversion=b3c9a924aab61adbc29df110006aa03afe1a78ba <d260cad015945d1f4bb9b028a096f648506106a2
  7. Affected versionversion=f94aa46efaa087ec075c83e4508f943fb5e43977 <0fac5f8fb1bc2fc4f8714bf5e743c9cc3f547c63

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15.41 <5.15.46; version=5.17.9 <5.17.14; version=5.18; version=a1aac13288de2935dc1a9330a93b1ac92f1e2b72 <f605f5558ecc175ec70016a3c15f007cb6386531; version=b3c9a924aab61adbc29df110006aa03afe1a78ba <acde4003efc16480375543638484d8f13f2e99a3; version=b3c9a924aab61adbc29df110006aa03afe1a78ba <d260cad015945d1f4bb9b028a096f648506106a2; version=f94aa46efaa087ec075c83e4508f943fb5e43977 <0fac5f8fb1bc2fc4f8714bf5e743c9cc3f547c63

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-416Use After Free
T1068Exploitation for Privilege Escalation

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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