Vulnerability-Lookup

GHSA-2XF2-3HGG-M6F8

Vulnerability from github – Published: 2025-03-10 21:31 – Updated: 2025-03-10 21:31

Details

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

x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails

In mce_threshold_create_device(), if threshold_create_bank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mce_threshold_remove_device() will not free it.

This happens because mce_threshold_remove_device() fetches the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when threshold_create_bank() fails.

Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing.

[ bp: Massage. ]

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-2022-49549"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Fix memory leak when threshold_create_bank() fails\n\nIn mce_threshold_create_device(), if threshold_create_bank() fails, the\npreviously allocated threshold banks array @bp will be leaked because\nthe call to mce_threshold_remove_device() will not free it.\n\nThis happens because mce_threshold_remove_device() fetches the pointer\nthrough the threshold_banks per-CPU variable but bp is written there\nonly after the bank creation is successful, and not before, when\nthreshold_create_bank() fails.\n\nAdd a helper which unwinds all the bank creation work previously done\nand pass into it the previously allocated threshold banks array for\nfreeing.\n\n  [ bp: Massage. ]",
  "id": "GHSA-2xf2-3hgg-m6f8",
  "modified": "2025-03-10T21:31:09Z",
  "published": "2025-03-10T21:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49549"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0"
    }
  ],
  "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-2022-49549 (GCVE-0-2022-49549)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:14 – Updated: 2025-10-01 19:46

Title

x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails

Summary

In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mce_threshold_remove_device() will not free it. This happens because mce_threshold_remove_device() fetches the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when threshold_create_bank() fails. Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing. [ bp: Massage. ]

Severity ?

5.5 (Medium)


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

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/b4acb8e7f1594607b…
	https://git.kernel.org/stable/c/cc0dd4456f9573bf8…
	https://git.kernel.org/stable/c/9708f1956eeb70c86…
	https://git.kernel.org/stable/c/396b8e7ab2a99ddac…
	https://git.kernel.org/stable/c/e5f28623ceb103e13…

Impacted products

Vendor

Product

Version

Linux

Affected: 6458de97fc15530b54477c4e2b70af653e8ac3d9 , < b4acb8e7f1594607bc9017ef0aacb40b24a003d6 (git)
Affected: 6458de97fc15530b54477c4e2b70af653e8ac3d9 , < cc0dd4456f9573bf8af9b4d8754433918e809e1e (git)
Affected: 6458de97fc15530b54477c4e2b70af653e8ac3d9 , < 9708f1956eeb70c86943e0bc62fa3b0101b59616 (git)
Affected: 6458de97fc15530b54477c4e2b70af653e8ac3d9 , < 396b8e7ab2a99ddac57d3522b3da5e58cb608d37 (git)
Affected: 6458de97fc15530b54477c4e2b70af653e8ac3d9 , < e5f28623ceb103e13fc3d7bd45edf9818b227fd0 (git)

Linux

Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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              "version": "5.15.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-2XF2-3HGG-M6F8

CVE-2022-49549 (GCVE-0-2022-49549)

Tags

Sightings

Nomenclature