Vulnerability-Lookup

GHSA-JM36-7355-XC6R

Vulnerability from github – Published: 2025-10-23 12:31 – Updated: 2025-10-23 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: qcom: bam_dma: fix runtime PM underflow

Commit dbad41e7bb5f ("dmaengine: qcom: bam_dma: check if the runtime pm enabled") caused unbalanced pm_runtime_get/put() calls when the bam is controlled remotely. This commit reverts it and just enables pm_runtime in all cases, the clk_* functions already just nop when the clock is NULL.

Also clean up a bit by removing unnecessary bamclk null checks.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49650"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:40Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: qcom: bam_dma: fix runtime PM underflow\n\nCommit dbad41e7bb5f (\"dmaengine: qcom: bam_dma: check if the runtime pm enabled\")\ncaused unbalanced pm_runtime_get/put() calls when the bam is\ncontrolled remotely. This commit reverts it and just enables pm_runtime\nin all cases, the clk_* functions already just nop when the clock is NULL.\n\nAlso clean up a bit by removing unnecessary bamclk null checks.",
  "id": "GHSA-jm36-7355-xc6r",
  "modified": "2025-10-23T12:31:16Z",
  "published": "2025-10-23T12:31:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49650"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49650 (GCVE-0-2022-49650)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:04

Title

dmaengine: qcom: bam_dma: fix runtime PM underflow

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: qcom: bam_dma: fix runtime PM underflow Commit dbad41e7bb5f ("dmaengine: qcom: bam_dma: check if the runtime pm enabled") caused unbalanced pm_runtime_get/put() calls when the bam is controlled remotely. This commit reverts it and just enables pm_runtime in all cases, the clk_* functions already just nop when the clock is NULL. Also clean up a bit by removing unnecessary bamclk null checks.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/2f6ded79068cac8cf…
https://git.kernel.org/stable/c/b702a1077b51fcb39…
https://git.kernel.org/stable/c/0ac9c3dd0d6fe293c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: dbad41e7bb5f4b9949ff5ea1d76c20711f326308 , < 2f6ded79068cac8cff41d5d5632564165d98ee12 (git) Affected: dbad41e7bb5f4b9949ff5ea1d76c20711f326308 , < b702a1077b51fcb39507cc3bd39206f539319a96 (git) Affected: dbad41e7bb5f4b9949ff5ea1d76c20711f326308 , < 0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e (git)
Linux	Linux	Affected: 4.17 Unaffected: 0 , < 4.17 (semver) Unaffected: 5.15.54 , ≤ 5.15.* (semver) Unaffected: 5.18.11 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/qcom/bam_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2f6ded79068cac8cff41d5d5632564165d98ee12",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "b702a1077b51fcb39507cc3bd39206f539319a96",
              "status": "affected",
              "version": "dbad41e7bb5f4b9949ff5ea1d76c20711f326308",
              "versionType": "git"
            },
            {
              "lessThan": "0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e",
              "status": "affected",
              "version": "dbad41e7bb5f4b9949ff5ea1d76c20711f326308",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/qcom/bam_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.17"
            },
            {
              "lessThan": "4.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.54",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.11",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: qcom: bam_dma: fix runtime PM underflow\n\nCommit dbad41e7bb5f (\"dmaengine: qcom: bam_dma: check if the runtime pm enabled\")\ncaused unbalanced pm_runtime_get/put() calls when the bam is\ncontrolled remotely. This commit reverts it and just enables pm_runtime\nin all cases, the clk_* functions already just nop when the clock is NULL.\n\nAlso clean up a bit by removing unnecessary bamclk null checks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:04:02.776Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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        {
          "url": "https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e"
        }
      ],
      "title": "dmaengine: qcom: bam_dma: fix runtime PM underflow",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49650",
    "datePublished": "2025-02-26T02:23:53.006Z",
    "dateReserved": "2025-02-26T02:21:30.433Z",
    "dateUpdated": "2026-05-11T19:04:02.776Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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