github - ghsa-gqp9-r7wj-r9hc

GHSA-GQP9-R7WJ-R9HC

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-11-07 21:31

Details

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

mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()

Commit da87878010e5 ("mm/damon/sysfs: support online inputs update") made 'damon_sysfs_set_schemes()' to be called for running DAMON context, which could have schemes. In the case, DAMON sysfs interface is supposed to update, remove, or add schemes to reflect the sysfs files. However, the code is assuming the DAMON context wouldn't have schemes at all, and therefore creates and adds new schemes. As a result, the code doesn't work as intended for online schemes tuning and could have more than expected memory footprint. The schemes are all in the DAMON context, so it doesn't leak the memory, though.

Remove the wrong asssumption (the DAMON context wouldn't have schemes) in 'damon_sysfs_set_schemes()' to fix the bug.

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-2022-48996"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:11Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()\n\nCommit da87878010e5 (\"mm/damon/sysfs: support online inputs update\") made\n\u0027damon_sysfs_set_schemes()\u0027 to be called for running DAMON context, which\ncould have schemes.  In the case, DAMON sysfs interface is supposed to\nupdate, remove, or add schemes to reflect the sysfs files.  However, the\ncode is assuming the DAMON context wouldn\u0027t have schemes at all, and\ntherefore creates and adds new schemes.  As a result, the code doesn\u0027t\nwork as intended for online schemes tuning and could have more than\nexpected memory footprint.  The schemes are all in the DAMON context, so\nit doesn\u0027t leak the memory, though.\n\nRemove the wrong asssumption (the DAMON context wouldn\u0027t have schemes) in\n\u0027damon_sysfs_set_schemes()\u0027 to fix the bug.",
  "id": "GHSA-gqp9-r7wj-r9hc",
  "modified": "2024-11-07T21:31:38Z",
  "published": "2024-10-21T21:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48996"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95bc35f9bee5220dad4e8567654ab3288a181639"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f98d1f2a36ad7ab48fb4cf73ca14e7b19482fd4d"
    }
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  "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-2022-48996 (GCVE-0-2022-48996)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2025-05-04 08:27

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes() Commit da87878010e5 ("mm/damon/sysfs: support online inputs update") made 'damon_sysfs_set_schemes()' to be called for running DAMON context, which could have schemes. In the case, DAMON sysfs interface is supposed to update, remove, or add schemes to reflect the sysfs files. However, the code is assuming the DAMON context wouldn't have schemes at all, and therefore creates and adds new schemes. As a result, the code doesn't work as intended for online schemes tuning and could have more than expected memory footprint. The schemes are all in the DAMON context, so it doesn't leak the memory, though. Remove the wrong asssumption (the DAMON context wouldn't have schemes) in 'damon_sysfs_set_schemes()' to fix the bug.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f98d1f2a36ad7ab48…
	https://git.kernel.org/stable/c/95bc35f9bee5220da…

Impacted products

Vendor

Product

Version

Linux

Affected: da87878010e59869d4d27b3c01ecc8ec06ff4a20 , < f98d1f2a36ad7ab48fb4cf73ca14e7b19482fd4d (git)
Affected: da87878010e59869d4d27b3c01ecc8ec06ff4a20 , < 95bc35f9bee5220dad4e8567654ab3288a181639 (git)

Linux

Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (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-GQP9-R7WJ-R9HC

CVE-2022-48996 (GCVE-0-2022-48996)

Tags

Sightings

Nomenclature