CVE-2022-49532

Kernel crash via unchecked display-mode allocation

Published Feb 26, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel's virtio GPU DRM driver allows local users to crash the system through a connector ioctl. When drm_cvt_mode fails to allocate a display mode and returns NULL, virtio_gpu_conn_get_modes reads mode fields without checking the pointer. A low-privilege user must reach the virtio GPU connector-mode ioctl while the allocation fails; the documented impact is a kernel crash only.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel's virtio GPU DRM driver allows local users to crash the system through a connector ioctl. When drm_cvt_mode fails to allocate a display mode and returns NULL, virtio_gpu_conn_get_modes reads mode fields without checking the pointer. A low-privilege user must reach the virtio GPU connector-mode ioctl while the allocation fails; the documented impact is a kernel crash only.

The record

CVE
CVE-2022-49532
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
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=4.2
  2. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <0f8bc147a963686b7351aa35d1701124ffacac08
  3. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <194d250cdc4a40ccbd179afd522a9e9846957402
  4. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <32e10aabc287f09a148ff759bb9ce70b01b0012c
  5. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <848dd072744ea662ab3097e3c8282bee552df218
  6. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <c51d00472fa54b9b05c17789ed665c17adf3a25d
  7. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <e0828456578cc8ba0a69147f7ae3428392eec287
  8. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <edafcad84c4134ebec4bc24b29ca4497a1184eea
  9. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <f85cb059fad03a3b33a50023be91e944bb065ae8
  10. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <fadc626cae99aaa1325094edc6a9e2b883f3e562

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=dc5698e80cf724770283e10414054662bdf6ccfa <0f8bc147a963686b7351aa35d1701124ffacac08; version=dc5698e80cf724770283e10414054662bdf6ccfa <194d250cdc4a40ccbd179afd522a9e9846957402; version=dc5698e80cf724770283e10414054662bdf6ccfa <32e10aabc287f09a148ff759bb9ce70b01b0012c; version=dc5698e80cf724770283e10414054662bdf6ccfa <848dd072744ea662ab3097e3c8282bee552df218; version=dc5698e80cf724770283e10414054662bdf6ccfa <c51d00472fa54b9b05c17789ed665c17adf3a25d; version=dc5698e80cf724770283e10414054662bdf6ccfa <e0828456578cc8ba0a69147f7ae3428392eec287; version=dc5698e80cf724770283e10414054662bdf6ccfa <edafcad84c4134ebec4bc24b29ca4497a1184eea; version=dc5698e80cf724770283e10414054662bdf6ccfa <f85cb059fad03a3b33a50023be91e944bb065ae8; version=dc5698e80cf724770283e10414054662bdf6ccfa <fadc626cae99aaa1325094edc6a9e2b883f3e562

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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-476NULL Pointer Dereference
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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