Vulnerability record · CVE-2026-64379 · published 25 July 2026

CVE-2026-64379: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.1 CVSS 3.1 High EPSS 0.31% · top 78.7%

7.1CVSS 3.1 base score

0.31%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

8 Sep 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux

References

Link	Tags
https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78	Patch
https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14	Patch
https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d	Patch
https://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d	Patch
https://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151	Patch
https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef	Patch
https://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94	Patch
https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954	Patch

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-64379), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.