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Vulnerability Details :

CVE-2026-64138

Summary
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At-19 Jul, 2026 | 15:40
Updated At-20 Jul, 2026 | 06:41
Rejected At-
Credits

ksmbd: validate SID in parent security descriptor during ACL inheritance

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_validate_ntsd_sid() helper to safely validate Owner SID and Group SID inside the NT Security Descriptor (smb_ntsd) retrieved from the parent directory.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Linux
Assigner Org ID:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:19 Jul, 2026 | 15:40
Updated At:20 Jul, 2026 | 06:41
Rejected At:
▼CVE Numbering Authority (CNA)
ksmbd: validate SID in parent security descriptor during ACL inheritance

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_validate_ntsd_sid() helper to safely validate Owner SID and Group SID inside the NT Security Descriptor (smb_ntsd) retrieved from the parent directory.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • fs/smb/server/smbacl.c
Default Status
unaffected
Versions
Affected
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before f0e5c9c663badc9982e6941322eef1cb17de0f11 (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 18d8db24b0a5b7be4829238dd4022236df02d421 (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 1c9d0646a9959752f11ca1080dc1ff26bd1756cb (git)
  • From e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 69f030cf95488ae1186c72ac8c66fd279664ea7f (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • fs/smb/server/smbacl.c
Default Status
affected
Versions
Affected
  • 5.15
Unaffected
  • From 0 before 5.15 (semver)
  • From 6.12.92 through 6.12.* (semver)
  • From 6.18.34 through 6.18.* (semver)
  • From 7.0.11 through 7.0.* (semver)
  • From 7.1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11
N/A
https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421
N/A
https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb
N/A
https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f
N/A
Hyperlink: https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:19 Jul, 2026 | 16:17
Updated At:20 Jul, 2026 | 07:16

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_validate_ntsd_sid() helper to safely validate Owner SID and Group SID inside the NT Security Descriptor (smb_ntsd) retrieved from the parent directory.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
Hyperlink: https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A

Change History

0
Information is not available yet

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