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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0016.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < 074db6db03a0aaa78f05ca9d4838053713796665
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < 7b03312491f9fe6ba4d60c4023e7e61d2d1fed96
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < 75597e8774f319152744d24e0683d9393540a951
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < cc42fb40171c249bb859071d81b4eb007398a0bc
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < bbbac12083eff489b35d848332f0dff311131344
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < 23b8b188cb32e5531d0f8d3af9506f8959cb369e
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < a9e886f73dd717027028bb7e3bbca93601ecdfc7
cde001e4c3c3625c60b68a83eb1f1c2572dee07a affected < 39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b
f60b0fa8bbddde66f1d197be07120264b555c84a affected —
3.12.44 affected < 3.13
Linux Linux affected
Version Status Constraints
4.1 affected —
0 unaffected < 4.1
5.10.261 unaffected ≤ 5.10.*
5.15.212 unaffected ≤ 5.15.*
6.1.178 unaffected ≤ 6.1.*
6.6.145 unaffected ≤ 6.6.*
6.12.96 unaffected ≤ 6.12.*
6.18.39 unaffected ≤ 6.18.*
7.1.4 unaffected ≤ 7.1.*
7.2 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Linux Subscribe
Linux Kernel Subscribe

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4717-1 linux security update
Debian DLA Debian DLA DLA-4720-1 linux security update
Debian DLA Debian DLA DLA-4723-1 linux-6.1 security update
Debian DLA Debian DLA DLA-4724-1 linux-6.12 new package
Ubuntu USN Ubuntu USN USN-8726-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8727-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8728-1 Linux kernel (GCP) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665 cve-icon cve-icon
https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e cve-icon cve-icon
https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b cve-icon cve-icon
https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951 cve-icon cve-icon
https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96 cve-icon cve-icon
https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7 cve-icon cve-icon
https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344 cve-icon cve-icon
https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026072508-CVE-2026-64306-62d1@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-64306 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-64306 cve-icon
History

Thu, 03 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-758

Thu, 03 Sep 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200
CWE-758

Thu, 03 Sep 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Sat, 01 Aug 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-758

Thu, 30 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Tue, 28 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-758

Sat, 25 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
Description 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.
Title crypto: drbg - Fix returning success on failure in CTR_DRBG
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-17T04:53:05.476Z

Reserved: 2026-07-19T15:36:31.779Z

Link: CVE-2026-64306

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-07-25T10:17:11.653

Modified: 2026-09-03T16:06:40.513

Link: CVE-2026-64306

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-25T00:00:00Z

Links: CVE-2026-64306 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T21:30:06Z

Weaknesses