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CVE Record

CVE-2022-49222: drm/bridge: anx7625: Fix overflow issue on reading EDID

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: anx7625: Fix overflow issue on reading EDID The length of EDID block can be longer than 256 bytes, so we should use `int` instead of `u8` for the `edid_pos` variable.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-49222 is a Linux kernel bug in the anx7625 display bridge driver. When reading EDID display data, a counter could overflow because it used an 8-bit value for data that may exceed 256 bytes. The public record does not state business impact, CVSS severity, or active exploitation.

Executive priority

Handle through routine kernel patch governance unless your fleet includes affected embedded or display-focused Linux devices. There is not enough public evidence to justify emergency response, but kernel fixes should be adopted through normal maintenance windows.

Technical view

The resolved kernel issue changes the anx7625 EDID read position variable from u8 to int because EDID block length can exceed 256 bytes. This addresses an overflow condition in drm/bridge/anx7625. The CVE record lists affected Linux kernel ranges and references stable kernel commits, but provides no CWE, CVSS, or exploitability detail.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the anx7625 DRM bridge driver present and relevant display hardware paths in use. Systems without this driver or hardware path are less likely exposed, but the source data does not provide a definitive exposure test.

Exploitation context

No active exploitation is reported in the provided sources, and the CVE is not marked as CISA KEV. The sources do not describe attack prerequisites, attacker location, required privileges, or practical impact. Treat exploitability as unproven from available public evidence.

Researcher notes

Key evidence is narrow: a kernel commit-level fix for an integer width overflow during EDID reads. The public CVE lacks CVSS, CWE, impact analysis, and exploitation details. Further triage should focus on driver reachability, hardware presence, and whether downstream kernels backported the fix.

Mitigation direction

  • Update to a Linux kernel or vendor kernel package containing the referenced stable fixes.
  • Check your Linux distribution or device vendor advisory for backported fixes.
  • Prioritize systems using the anx7625 display bridge driver or affected embedded hardware.
  • Track this under normal kernel maintenance if anx7625 exposure is absent or unconfirmed.

Validation and detection

  • Inventory Linux kernel versions against the affected and fixed ranges in the CVE record.
  • Confirm whether the anx7625 DRM bridge driver is enabled or present in deployed kernels.
  • Verify vendor kernels include one of the referenced stable commits or an equivalent backport.
  • Document systems where display bridge hardware exposure cannot be confirmed.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2022-49222 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
5Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730unaffected
LinuxLinux5.11, 0, 5.15.33, 5.16.19, 5.17.2, 5.18affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.