CVE-2026-64379
Medium
Elevated severity or exploit probability.
CVSS base
7.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
EPSS — probability of exploitation (30 days)
0.3%
23.9th percentile
CISA KEV
Not listed
Weakness / dates
—
Published 2026-07-25 · modified 2026-09-08
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | L | Low |
| Availability | H | High |
Timeline
- 2026-07-25 — Published (NVD)
- 2026-09-08 — Last modified (NVD)
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: mask server-provided mode to 07777 in modefromsid When modefromsid is active, parse_dacl() applies the server-provided sub_auth[2] value from the NFS mode SID to cf_mode without masking to 07777. Apply the correct masking, same as in the read path.
Affected
References
- https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78
- https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14
- https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d
- https://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d
- https://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151
- https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef
- https://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94
- https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954