CVE-2026-64306

CVE-2026-64306

Medium · published July 25, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
4.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00160 · 4.8th percentile
Published
2026-07-25T14:17Z
Affected products (8)
ProductVersionsFixed in
linux/linux_kernel≥ 3.12.44, < 3.133.13
linux/linux_kernel≥ 4.1, < 5.10.2615.10.261
linux/linux_kernel≥ 5.11, < 5.15.2125.15.212
linux/linux_kernel≥ 5.16, < 6.1.1786.1.178
linux/linux_kernel≥ 6.2, < 6.6.1456.6.145
linux/linux_kernel≥ 6.7, < 6.12.966.12.96
linux/linux_kernel≥ 6.13, < 6.18.396.18.39
linux/linux_kernel≥ 6.19, < 7.1.47.1.4
References (8)
https://git.kernel.org/stable/c/074db6db03a0aaa78f05ca9d4838053713796665 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23b8b188cb32e5531d0f8d3af9506f8959cb369e · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39a31ad9e2a5ed7e9c9c6f711dca96c8c8f5f26b · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75597e8774f319152744d24e0683d9393540a951 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b03312491f9fe6ba4d60c4023e7e61d2d1fed96 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9e886f73dd717027028bb7e3bbca93601ecdfc7 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bbbac12083eff489b35d848332f0dff311131344 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cc42fb40171c249bb859071d81b4eb007398a0bc · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 25 JUL 08:49Z
    crypto: drbg - Fix returning success on failure in CTR_DRBG
    cvelistv5