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CVE Record

CVE-2022-50368: drm/msm/dsi: fix memory corruption with too many bridges

In the Linux kernel, the following vulnerability has been resolved: drm/msm/dsi: fix memory corruption with too many bridges Add the missing sanity check on the bridge counter to avoid corrupting data beyond the fixed-sized bridge array in case there are ever more than eight bridges. Patchwork: https://patchwork.freedesktop.org/patch/502668/

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2022-50368 is a Linux kernel memory corruption issue in the MSM DSI display bridge handling code. A local user with low privileges could potentially affect confidentiality, integrity, and availability. There is no provided evidence of active exploitation. Business urgency is highest for systems running affected Linux kernels with this driver path enabled.

Executive priority

Treat as a high-priority kernel maintenance item, especially for Linux systems using Qualcomm MSM display components. It requires local access, so it is less urgent than a remote wormable issue, but kernel memory corruption can have serious business impact.

Technical view

The flaw is a CWE-787 out-of-bounds write in drm/msm/dsi. The kernel code lacked a sanity check on a bridge counter, allowing writes beyond a fixed-size bridge array if more than eight bridges are present. CVSS is 7.8: local attack vector, low complexity, low privileges, no user interaction, high CIA impact.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions and the MSM DSI display bridge code path. The source lists affected Linux kernel ranges and stable kernel fixes, but does not identify specific distributions, devices, or configurations.

Exploitation context

The CVSS vector indicates local, low-privilege exploitation with no user interaction. The source bundle marks CISA KEV as false, and no cited source states active exploitation. Public details describe the bug class and fix, not exploitation in the wild.

Researcher notes

The public record ties the issue to a missing bounds check for a fixed eight-entry bridge array in drm/msm/dsi. Available evidence is sparse: no exploit status, affected distributions, or configuration matrix is provided. Validate exposure through kernel version, configuration, and vendor backport status.

Mitigation direction

  • Identify Linux kernels in the affected ranges listed for CVE-2022-50368.
  • Prioritize systems using the drm/msm/dsi driver path.
  • Update to a kernel containing the referenced stable fixes.
  • For vendor kernels, follow the distribution or device vendor advisory.
  • If immediate patching is unavailable, reduce local untrusted access where feasible.

Validation and detection

  • Check running kernel versions against the CVE affected version data.
  • Confirm whether the MSM DSI driver is built or loaded.
  • Verify kernel packages include the referenced upstream stable commits.
  • Review vendor advisories for backported fixes with different version numbers.
  • Document systems where exposure cannot be confirmed from available evidence.
Prepared
Confidence
medium
Sources
8

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-787: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-50368 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

1CVSS vectors
3Timeline events
1ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2022-50368Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa689554ba6ed81cf606c16539f6ffc2a1dcdaf8e, a689554ba6ed81cf606c16539f6ffc2a1dcdaf8e, a689554ba6ed81cf606c16539f6ffc2a1dcdaf8e, a689554ba6ed81cf606c16539f6ffc2a1dcdaf8e, a689554ba6ed81cf606c16539f6ffc2a1dcdaf8e, a689554ba6ed81cf606c16539f6ffc2a1dcdaf8eunaffected
LinuxLinux4.1, 0, 4.19.264, 5.4.223, 5.10.153, 5.15.77, 6.0.7, 6.1affected
Weakness

CWE details

CWE-787

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

CWE-787 · source CWE mapping

Out-of-bounds Write

Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs