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CVE-2026-64391: linux kernel from 5.15 (inclusive), before 6.12.96 (exclusive), from 6.13 (inclusive), before 6.18.39 (exclusive)…
CVE-2026-64391. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00457 (percentile 0.3836), scored 20-Oct-2026.
Affected technology
linux kernel · from 5.15 (inclusive), before 6.12.96 (exclusive)
linux
linux kernel · from 6.13 (inclusive), before 6.18.39 (exclusive)
linux
linux kernel · from 6.19 (inclusive), before 7.1.4 (exclusive)
linux
Linux · f44158485826c076335d6860d35872271a83791d to before 2ad5509dd576ae16d252d4698daf03002f9e0234, f44158485826c076335d6860d35872271a83791d to before a8f5d39971bbad9340d49cd41b0e2da9452a649d, f44158485826c076335d6860d35872271a83791d to before 2b4592cea214683de0f2ce6f8c22c097fb0ea1ab, f44158485826c076335d6860d35872271a83791d to before 52a56cf53ec834c44ac1b4d16d585f26613ee5ce, f44158485826c076335d6860d35872271a83791d to before baa5e094886fffa7e6272edcb5e08be5ce28262c
Linux
Linux · 5.15
Linux
Component: Not specified by the source
File: fs/smb/server/vfs.c
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CCR priority
- 39.3 /100 (P4)
- CVSS 3.1
- 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.00457 · percentile 0.3836 · 2026-10-20
- KEV
- no
Provenance
- GitHub Advisory Database · Source record · observed 2026-10-21 16:14:50.830645+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-21 16:09:05.633125+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-64391.html