CVE-2026-53213 (GCVE-0-2026-53213)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39
VLAI
Title
drm/vc4: fix krealloc() memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: fix krealloc() memory leak Don't just overwrite the original pointer passed to krealloc() with its return value without checking latter: MEM = krealloc(MEM, SZ, GFP); If krealloc() returns NULL, that erases the pointer to the still allocated memory, hence leaks this memory. Instead, use a temporary variable, check it's not NULL and only then assign it to the original pointer: TMP = krealloc(MEM, SZ, GFP); if (!TMP) return; MEM = TMP; While on it, use krealloc_array().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < 30165a09f76eaf34951c818eb5d9d6e4771d76f6 (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27 (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < 02f5e4db57c0cdd7bac89d503b301a093a0fa95c (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < 4fc692dc6df5bc777cc1bcebf95179e28594875f (git)
Affected: 6d45c81d229d71da54d374143e7d6abad4c0cf31 , < 5d563a5da8717629ae72f9eadf1e0e340bd1658b (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/gpu/drm/vc4/vc4_validate_shaders.c"
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        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: fix krealloc() memory leak\n\nDon\u0027t just overwrite the original pointer passed to krealloc()\nwith its return value without checking latter:\n\n    MEM = krealloc(MEM, SZ, GFP);\n\nIf krealloc() returns NULL, that erases the pointer\nto the still allocated memory, hence leaks this memory.\nInstead, use a temporary variable, check it\u0027s not NULL\nand only then assign it to the original pointer:\n\n    TMP = krealloc(MEM, SZ, GFP);\n    if (!TMP) return;\n    MEM = TMP;\n\nWhile on it, use krealloc_array()."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:17.552Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/5d563a5da8717629ae72f9eadf1e0e340bd1658b"
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      "title": "drm/vc4: fix krealloc() memory leak",
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    "dateReserved": "2026-06-09T07:44:35.392Z",
    "dateUpdated": "2026-06-25T08:39:17.552Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-07-01",
      "epss": "0.0018",
      "percentile": "0.07798"
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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

Author Source Type Date Other

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.