CVE-2022-49069

Kernel crash via unprotected FPU context

Published Feb 26, 2025 · Updated Aug 12, 2026

Denial of service in Linux kernel 4.15 through 5.16.19 and 5.17 through 5.17.2 allows local users to crash systems via graphics workloads. The dcn30_internal_validate_bw path calls populate_dml_pipes, which initializes floating-point values without protecting kernel FPU context across a context switch. The observed trigger requires the AMD display path and sustained WebGL Aquarium activity; debug logging at 0x1f makes the general-protection fault occur sooner.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux kernel 4.15 through 5.16.19 and 5.17 through 5.17.2 allows local users to crash systems via graphics workloads. The dcn30_internal_validate_bw path calls populate_dml_pipes, which initializes floating-point values without protecting kernel FPU context across a context switch. The observed trigger requires the AMD display path and sustained WebGL Aquarium activity; debug logging at 0x1f makes the general-protection fault occur sooner.

The record

CVE
CVE-2022-49069
Published
Feb 26, 2025
Updated
Aug 12, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=5.15.19 <5.16
  2. Affected versionversion=5.16.5 <5.16.20
  3. Affected versionversion=5.17
  4. Affected versionversion=548f20b39ec91fdd97194a84a0d9b2f68715762a
  5. Affected versionversion=72a8d87b87270bff0c0b2fed4d59c48d0dd840d7 <76f4c5e5f99ee7084b555d9a38e8ffeb16ec65a2
  6. Affected versionversion=72a8d87b87270bff0c0b2fed4d59c48d0dd840d7 <ca1198849ab0e7af5efb392ef6baf1138f6fc086
  7. Affected versionversion=88298b87cb81311cd21304ff3e028f34fcee2b8b <e995c5d52ec7415644eee617fc7e906b51aec7ae

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15.19 <5.16; version=5.16.5 <5.16.20; version=5.17; version=548f20b39ec91fdd97194a84a0d9b2f68715762a; version=72a8d87b87270bff0c0b2fed4d59c48d0dd840d7 <76f4c5e5f99ee7084b555d9a38e8ffeb16ec65a2; version=72a8d87b87270bff0c0b2fed4d59c48d0dd840d7 <ca1198849ab0e7af5efb392ef6baf1138f6fc086; version=88298b87cb81311cd21304ff3e028f34fcee2b8b <e995c5d52ec7415644eee617fc7e906b51aec7ae

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

T1499.004Application or System Exploitation

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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