ghsa-mvcj-x699-wrp4
Vulnerability from github
Published
2025-08-16 12:30
Modified
2025-08-16 12:30
Details

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

mm/damon: fix divide by zero in damon_get_intervals_score()

The current implementation allows having zero size regions with no special reasons, but damon_get_intervals_score() gets crashed by divide by zero when the region size is zero.

[ 29.403950] Oops: divide error: 0000 [#1] SMP NOPTI

This patch fixes the bug, but does not disallow zero size regions to keep the backward compatibility since disallowing zero size regions might be a breaking change for some users.

In addition, the same crash can happen when intervals_goal.access_bp is zero so this should be fixed in stable trees as well.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2025-38519"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-16T11:15:45Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon: fix divide by zero in damon_get_intervals_score()\n\nThe current implementation allows having zero size regions with no special\nreasons, but damon_get_intervals_score() gets crashed by divide by zero\nwhen the region size is zero.\n\n  [   29.403950] Oops: divide error: 0000 [#1] SMP NOPTI\n\nThis patch fixes the bug, but does not disallow zero size regions to keep\nthe backward compatibility since disallowing zero size regions might be a\nbreaking change for some users.\n\nIn addition, the same crash can happen when intervals_goal.access_bp is\nzero so this should be fixed in stable trees as well.",
  "id": "GHSA-mvcj-x699-wrp4",
  "modified": "2025-08-16T12:30:32Z",
  "published": "2025-08-16T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38519"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd225b9591442065beb876da72656f4a2d627d03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca4bb9ac706f05ead8ac1cce7b8245fc0645a687"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.