CVE-2026-64306
Not scored
crypto: drbg - Fix returning success on failure in CTR_DRBG
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.
Exploit probability
0.2%
Published
July 25, 2026
Required by
Not available
Last source change
August 18, 2026
02 / AFFECTED SOFTWARE
Affected packages
371 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2026-64306
View original source
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665
- https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e
- https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b
- https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951
- https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96
- https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7
- https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344
- https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64306.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64306