CVE-2026-93786

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Source

https://cve.org/CVERecord?id=CVE-2026-93786

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93786.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-93786

Downstream

Published

2026-09-24T16:02:19Z

Modified

2026-10-05T02:30:16Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

ksmbd: preserve VFS inherited POSIX ACL mask

Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: preserve VFS inherited POSIX ACL mask

The VFS initializes a child's POSIX ACL from the parent's default ACL and the requested creation mode. Do not mutate the parent ACL or overwrite the child's VFS-computed access and default ACLs afterwards.

This preserves restrictive ACL_MASK entries and prevents SMB object creation from widening effective permissions.

Database specific

{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93786.json"
}

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

f44158485826c076335d6860d35872271a83791d

Fixed

4a19bb1c45667f5a5f6eff9cf6648e0f692d046f

Fixed

591acf171644de590cda245fd8595b473a1beb70

Fixed

0093909becbda22b62b39b654dbc607faed59cd0

Fixed

e148e567a9252643baa125cb65d7ae9c2c6cf68a

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93786.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

5.15.0

Fixed

6.6.158

Type: ECOSYSTEM
Events: Introduced

6.7.0

Fixed

6.12.111

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.18.53

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93786.json"