smb: client: mask server-provided mode to 07777 in modefromsid

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64379
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-25 10:17:21 UTC
Updated2026-07-27 05:16:44 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.003090000 probability, percentile 0.231590000 (date 2026-07-27)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14 git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 ee2216dbdf0c677e89bb43e03247dba590ed00ef git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 f511807feee7cb29b61bdfa86472c7e9e2e5df94 git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 08c600b7e1818539ba5efee4cdb06215c245ca78 git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 c6c484a7d5bff6b929a86d7ed5130f29834c6a0d git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 f80add1bfb3425100a325b14f19648e75669a954 git Not specified
CNA Linux Linux affected e2f8fbfb8d09c06decde162090fac3ee220aa280 e3d9c7160d483fc8f9e225aafad8ecbbc43f3151 git Not specified
CNA Linux Linux affected 5.4 Not specified
CNA Linux Linux unaffected 5.4 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.96 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.39 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report