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CVE Record

CVE-2022-50836: remoteproc: sysmon: fix memory leak in qcom_add_sysmon_subdev()

In the Linux kernel, the following vulnerability has been resolved: remoteproc: sysmon: fix memory leak in qcom_add_sysmon_subdev() The kfree() should be called when of_irq_get_byname() fails or devm_request_threaded_irq() fails in qcom_add_sysmon_subdev(), otherwise there will be a memory leak, so add kfree() to fix it.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2022-50836 is a Linux kernel memory leak in the Qualcomm remoteproc sysmon code. If certain interrupt setup operations fail, memory is not freed. The public record does not provide CVSS scoring or evidence of active exploitation. Business urgency is mainly for teams running affected Linux kernels on platforms using this subsystem.

Executive priority

Treat as routine kernel maintenance unless your environment includes Qualcomm-based Linux devices using remoteproc sysmon. There is no cited active exploitation or severity score, but affected embedded or mobile-adjacent platforms should receive normal patch-cycle attention.

Technical view

The flaw is in qcom_add_sysmon_subdev() in Linux remoteproc sysmon. Missing kfree() calls on of_irq_get_byname() or devm_request_threaded_irq() failure paths cause leaked memory. Linux stable commits add the missing cleanup. The source data lists Linux as affected and references multiple stable backports.

Likely exposure

Exposure is most likely on Linux systems using Qualcomm remoteproc sysmon support and kernel versions covered by the affected Linux record. General-purpose Linux systems without this driver or hardware path may have limited practical exposure, but validation is required.

Exploitation context

No source in the bundle reports active exploitation, and KEV status is false. The issue appears to require triggering specific kernel driver error paths, with the likely impact being memory consumption or instability rather than direct code execution.

Researcher notes

Evidence is limited to the CVE record and Linux stable commit references. The vulnerability is a cleanup bug on error paths, not a described remote attack chain. Avoid assuming exploitability beyond resource leakage without platform-specific driver reachability analysis.

Mitigation direction

  • Update to a vendor-supported Linux kernel containing the referenced stable fixes.
  • Prioritize Qualcomm-based systems using remoteproc or sysmon functionality.
  • If patch status is unclear, consult the Linux distribution or device vendor advisory.
  • Track kernel updates that include the listed git.kernel.org commits.

Validation and detection

  • Inventory Linux kernel versions across Qualcomm-based devices and embedded platforms.
  • Check whether the remoteproc sysmon Qualcomm driver is present and used.
  • Confirm whether the deployed kernel includes one of the referenced stable fixes.
  • Review vendor kernel changelogs for CVE-2022-50836 or the linked commits.
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

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CVE-2022-50836 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
0Timeline events
0ADP providers
7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux027045a6e2b7cd81216e8a559534a30fb0782702, 027045a6e2b7cd81216e8a559534a30fb0782702, 027045a6e2b7cd81216e8a559534a30fb0782702, 027045a6e2b7cd81216e8a559534a30fb0782702, 027045a6e2b7cd81216e8a559534a30fb0782702, 027045a6e2b7cd81216e8a559534a30fb0782702unaffected
LinuxLinux5.1, 0, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2affected
Weakness

CWE details

No CWE listed

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