Vulnerability-Lookup

GHSA-3WHP-4394-49GC

Vulnerability from github – Published: 2024-02-27 21:31 – Updated: 2024-04-10 21:30

Details

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

tools/power turbostat: Fix offset overflow issue in index converting

The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.

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-2021-46940"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T19:04:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntools/power turbostat: Fix offset overflow issue in index converting\n\nThe idx_to_offset() function returns type int (32-bit signed), but\nMSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number.\nThe end result is that it hits the if (offset \u003c 0) check in update_msr_sum()\nwhich prevents the timer callback from updating the stat in the background when\nlong durations are used. The similar issue exists in offset_to_idx() and\nupdate_msr_sum(). Fix this issue by converting the \u0027int\u0027 to \u0027off_t\u0027 accordingly.",
  "id": "GHSA-3whp-4394-49gc",
  "modified": "2024-04-10T21:30:28Z",
  "published": "2024-02-27T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46940"
    },
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      "url": "https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0"
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}

CVE-2021-46940 (GCVE-0-2021-46940)

Vulnerability from cvelistv5 – Published: 2024-02-27 18:40 – Updated: 2025-05-04 07:00

Title

tools/power turbostat: Fix offset overflow issue in index converting

Summary

In the Linux kernel, the following vulnerability has been resolved: tools/power turbostat: Fix offset overflow issue in index converting The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d…
	https://git.kernel.org/stable/c/dbdf22fc825fdb1d9…
	https://git.kernel.org/stable/c/337b1546cde87fb85…
	https://git.kernel.org/stable/c/13a779de4175df602…

Impacted products

Vendor

Product

Version

Linux

Affected: 9972d5d84d76982606806b2ce887f70c2f8ba60a , < ea6803ff2cd1a2d7d880256bf562172b708a76ff (git)
Affected: 9972d5d84d76982606806b2ce887f70c2f8ba60a , < dbdf22fc825fdb1d97f23230064e0f9819471628 (git)
Affected: 9972d5d84d76982606806b2ce887f70c2f8ba60a , < 337b1546cde87fb8588ddaedf0201b769baa572a (git)
Affected: 9972d5d84d76982606806b2ce887f70c2f8ba60a , < 13a779de4175df602366d129e41782ad7168cef0 (git)

Linux

Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.36 , ≤ 5.10.* (semver)
Unaffected: 5.11.20 , ≤ 5.11.* (semver)
Unaffected: 5.12.3 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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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-3WHP-4394-49GC

CVE-2021-46940 (GCVE-0-2021-46940)

Tags

Sightings

Nomenclature