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

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-05-11 22:03
VLAI?
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < d61171cf097156030142643942c217759a9cc806 (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < 811b45e2d795d955bb7fd9c816b40036f4fde350 (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < f08f2d2907675926ac5657b25f86d921f269602a (git)
Affected: f033c26de5a5734625d2dd1dc196745fae186f1b , < f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 (git)
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Linux 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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          "programFiles": [
            "drivers/base/regmap/regcache-maple.c"
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          "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)."
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:03:25.152Z",
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      "title": "regmap: maple: free entry on mas_store_gfp() failure",
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    "datePublished": "2026-03-18T17:41:06.738Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-05-11T22:03:25.152Z",
    "state": "PUBLISHED"
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.



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