CVE-2022-49963

Kernel crash via oversized DG2 migration copy

Published Jun 18, 2025 · Updated Aug 5, 2026

Integer overflow in Linux kernel 5.19 i915 migrate_copy allows local users to crash the kernel with an oversized DG2 graphics object. The function uses plain integers for sizes and passes an entire local-memory object to emit_pte despite fixed 8 MB mapping windows. Exploitation requires local low-privileged access, DG2 graphics, and an object larger than 64 MB to trigger the kernel assertion.

CVSS severity7.8
High
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

Integer overflow in Linux kernel 5.19 i915 migrate_copy allows local users to crash the kernel with an oversized DG2 graphics object. The function uses plain integers for sizes and passes an entire local-memory object to emit_pte despite fixed 8 MB mapping windows. Exploitation requires local low-privileged access, DG2 graphics, and an object larger than 64 MB to trigger the kernel assertion.

The record

CVE
CVE-2022-49963
Published
Jun 18, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.19
  2. Affected versionversion=da0595ae91da837929a00470ab40546090e5b9ae <8d905254162965c8e6be697d82c7dbf5d08f574d
  3. Affected versionversion=da0595ae91da837929a00470ab40546090e5b9ae <97434cb55bd884bd268626ec41489f79b261b2d4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=da0595ae91da837929a00470ab40546090e5b9ae <8d905254162965c8e6be697d82c7dbf5d08f574d; version=da0595ae91da837929a00470ab40546090e5b9ae <97434cb55bd884bd268626ec41489f79b261b2d4

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

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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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