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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{
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"programFiles": [
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{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver"
},
{
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"version": "6.18.36",
"versionType": "semver"
},
{
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"version": "7.0.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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}
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],
"descriptions": [
{
"lang": "en",
"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()."
}
],
"providerMetadata": {
"dateUpdated": "2026-06-25T08:39:17.552Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/30165a09f76eaf34951c818eb5d9d6e4771d76f6"
},
{
"url": "https://git.kernel.org/stable/c/fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f"
},
{
"url": "https://git.kernel.org/stable/c/e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e"
},
{
"url": "https://git.kernel.org/stable/c/c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27"
},
{
"url": "https://git.kernel.org/stable/c/02f5e4db57c0cdd7bac89d503b301a093a0fa95c"
},
{
"url": "https://git.kernel.org/stable/c/4fc692dc6df5bc777cc1bcebf95179e28594875f"
},
{
"url": "https://git.kernel.org/stable/c/5d563a5da8717629ae72f9eadf1e0e340bd1658b"
}
],
"title": "drm/vc4: fix krealloc() memory leak",
"x_generator": {
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}
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-53213",
"datePublished": "2026-06-25T08:39:17.552Z",
"dateReserved": "2026-06-09T07:44:35.392Z",
"dateUpdated": "2026-06-25T08:39:17.552Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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.
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