CVE-2026-64306 Details
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.
A vulnerability in the Linux kernel's CTR_DRBG implementation can lead to uninitialized output buffers. The issue arises because the 'drbg_ctr_generate()' function sometimes incorrectly reports success after a failure, allowing the output buffer to remain uninitialized. This vulnerability affects the Linux kernel's stable releases.
Users can upgrade to the latest stable version of the Linux kernel, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665 | kernel.org | Patch |
| https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e | kernel.org | Patch |
| https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b | kernel.org | Patch |
| https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7 | kernel.org | Patch |
| https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.12.44, < 3.13 >= 4.1, < 5.10.261 >= 5.11, < 5.15.212 >= 5.16, < 6.1.178 >= 6.2, < 6.6.145 >= 6.7, < 6.12.96 >= 6.13, < 6.18.39 >= 6.19, < 7.1.4 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 3, 2026 | Initial Analysis | [email protected] |
| Aug 17, 2026 | CVE Modified | kernel.org |
| Jul 25, 2026 | New CVE Received | kernel.org |