Vulnerability-Lookup

GHSA-5CRP-HWJ6-6WWW

Vulnerability from github – Published: 2026-03-18 18:31 – Updated: 2026-03-18 18:31

Details

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

regmap: maple: free entry on mas_store_gfp() failure

regcache_maple_write() allocates a new block ('entry') to merge adjacent ranges and then stores it with mas_store_gfp(). When mas_store_gfp() fails, the new 'entry' remains allocated and is never freed, leaking memory.

Free 'entry' on the failure path; on success continue freeing the replaced neighbor blocks ('lower', 'upper').

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23260"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-18T18:16:24Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nregmap: maple: free entry on mas_store_gfp() failure\n\nregcache_maple_write() allocates a new block (\u0027entry\u0027) to merge\nadjacent ranges and then stores it with mas_store_gfp().\nWhen mas_store_gfp() fails, the new \u0027entry\u0027 remains allocated and\nis never freed, leaking memory.\n\nFree \u0027entry\u0027 on the failure path; on success continue freeing the\nreplaced neighbor blocks (\u0027lower\u0027, \u0027upper\u0027).",
  "id": "GHSA-5crp-hwj6-6www",
  "modified": "2026-03-18T18:31:18Z",
  "published": "2026-03-18T18:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/811b45e2d795d955bb7fd9c816b40036f4fde350"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d61171cf097156030142643942c217759a9cc806"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f08f2d2907675926ac5657b25f86d921f269602a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23260 (GCVE-0-2026-23260)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-03-19 16:01

Title

regmap: maple: free entry on mas_store_gfp() failure

Summary

In the Linux kernel, the following vulnerability has been resolved: regmap: maple: free entry on mas_store_gfp() failure regcache_maple_write() allocates a new block ('entry') to merge adjacent ranges and then stores it with mas_store_gfp(). When mas_store_gfp() fails, the new 'entry' remains allocated and is never freed, leaking memory. Free 'entry' on the failure path; on success continue freeing the replaced neighbor blocks ('lower', 'upper').

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d61171cf097156030…
	https://git.kernel.org/stable/c/811b45e2d795d955b…
	https://git.kernel.org/stable/c/f08f2d2907675926a…
	https://git.kernel.org/stable/c/f3f380ce6b3d5c980…

Impacted products

Vendor

Product

Version

Linux

Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < d61171cf097156030142643942c217759a9cc806 (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < 811b45e2d795d955bb7fd9c816b40036f4fde350 (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < f08f2d2907675926ac5657b25f86d921f269602a (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 (git)

Linux

Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/regmap/regcache-maple.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d61171cf097156030142643942c217759a9cc806",
              "status": "affected",
              "version": "f033c26de5a5734625d2dd1dc196745fae186f1b",
              "versionType": "git"
            },
            {
              "lessThan": "811b45e2d795d955bb7fd9c816b40036f4fde350",
              "status": "affected",
              "version": "f033c26de5a5734625d2dd1dc196745fae186f1b",
              "versionType": "git"
            },
            {
              "lessThan": "f08f2d2907675926ac5657b25f86d921f269602a",
              "status": "affected",
              "version": "f033c26de5a5734625d2dd1dc196745fae186f1b",
              "versionType": "git"
            },
            {
              "lessThan": "f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8",
              "status": "affected",
              "version": "f033c26de5a5734625d2dd1dc196745fae186f1b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/regmap/regcache-maple.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.70",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.124",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.70",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregmap: maple: free entry on mas_store_gfp() failure\n\nregcache_maple_write() allocates a new block (\u0027entry\u0027) to merge\nadjacent ranges and then stores it with mas_store_gfp().\nWhen mas_store_gfp() fails, the new \u0027entry\u0027 remains allocated and\nis never freed, leaking memory.\n\nFree \u0027entry\u0027 on the failure path; on success continue freeing the\nreplaced neighbor blocks (\u0027lower\u0027, \u0027upper\u0027)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-19T16:01:05.479Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d61171cf097156030142643942c217759a9cc806"
        },
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          "url": "https://git.kernel.org/stable/c/811b45e2d795d955bb7fd9c816b40036f4fde350"
        },
        {
          "url": "https://git.kernel.org/stable/c/f08f2d2907675926ac5657b25f86d921f269602a"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8"
        }
      ],
      "title": "regmap: maple: free entry on mas_store_gfp() failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23260",
    "datePublished": "2026-03-18T17:41:06.738Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-03-19T16:01:05.479Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-5CRP-HWJ6-6WWW

CVE-2026-23260 (GCVE-0-2026-23260)

Tags

Sightings

Nomenclature