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Medium 5.5Published Jul 25, 2026
CVE-2026-64306crypto: drbg - Fix returning success on failure in CTR_DRBG
Updated under an hour ago ()
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before 074db6db03a0aaa78f05ca9d4838053713796665; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before 7b03312491f9fe6ba4d60c4023e7e61d2d1fed96; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before 75597e8774f319152744d24e0683d9393540a951; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before cc42fb40171c249bb859071d81b4eb007398a0bc; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before bbbac12083eff489b35d848332f0dff311131344; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before 23b8b188cb32e5531d0f8d3af9506f8959cb369e; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before a9e886f73dd717027028bb7e3bbca93601ecdfc7; from cde001e4c3c3625c60b68a83eb1f1c2572dee07a before 39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b; and 2 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 3.12.44 before 3.13; from 4.1 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4 | NVD |
References
- https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665patch
- https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96patch
- https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951patch
- https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bcpatch
- https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344patch
- https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369epatch
- https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7patch
- https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26bpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.