FKIE_CVE-2026-64306
Vulnerability from fkie_nvd - Published: 2026-07-25 10:17 - Updated: 2026-07-25 10:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: drbg - Fix returning success on failure in CTR_DRBG
drbg_ctr_generate() sometimes returns success when it fails, leaving the
output buffer uninitialized. Fix it.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"crypto/drbg.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "074db6db03a0aaa78f05ca9d4838053713796665",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "7b03312491f9fe6ba4d60c4023e7e61d2d1fed96",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "75597e8774f319152744d24e0683d9393540a951",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "cc42fb40171c249bb859071d81b4eb007398a0bc",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "bbbac12083eff489b35d848332f0dff311131344",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "23b8b188cb32e5531d0f8d3af9506f8959cb369e",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "a9e886f73dd717027028bb7e3bbca93601ecdfc7",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"lessThan": "39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b",
"status": "affected",
"version": "cde001e4c3c3625c60b68a83eb1f1c2572dee07a",
"versionType": "git"
},
{
"status": "affected",
"version": "f60b0fa8bbddde66f1d197be07120264b555c84a",
"versionType": "git"
},
{
"lessThan": "3.13",
"status": "affected",
"version": "3.12.44",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"crypto/drbg.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.1"
},
{
"lessThan": "4.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: drbg - Fix returning success on failure in CTR_DRBG\n\ndrbg_ctr_generate() sometimes returns success when it fails, leaving the\noutput buffer uninitialized. Fix it."
}
],
"id": "CVE-2026-64306",
"lastModified": "2026-07-25T10:17:11.653",
"metrics": {},
"published": "2026-07-25T10:17:11.653",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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