ksmbd: validate payload size in ipc response

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Summary

CVECVE-2024-26811
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-04-08 10:15:08 UTC
Updated2026-08-04 11:17:09 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ksmbd: validate payload size in ipc response If installing malicious ksmbd-tools, ksmbd.mountd can return invalid ipc response to ksmbd kernel server. ksmbd should validate payload size of ipc response from ksmbd.mountd to avoid memory overrun or slab-out-of-bounds. This patch validate 3 ipc response that has payload.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.007940000 probability, percentile 0.529240000 (date 2026-08-06)

Problem Types: CWE-787

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 6.9 - All All
Operating System Linux Linux Kernel 6.9 rc1 All All
Operating System Linux Linux Kernel 6.9 rc2 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0626e6641f6b467447c81dd7678a69c66f7746cf 88b7f1143b15b29cccb8392b4f38e75b7bb3e300 git Not specified
CNA Linux Linux affected 0626e6641f6b467447c81dd7678a69c66f7746cf 51a6c2af9d20203ddeeaf73314ba8854b38d01bd git Not specified
CNA Linux Linux affected 0626e6641f6b467447c81dd7678a69c66f7746cf a637fabac554270a851033f5ab402ecb90bc479c git Not specified
CNA Linux Linux affected 0626e6641f6b467447c81dd7678a69c66f7746cf 76af689a45aa44714b46d1a7de4ffdf851ded896 git Not specified
CNA Linux Linux affected 0626e6641f6b467447c81dd7678a69c66f7746cf a677ebd8ca2f2632ccdecbad7b87641274e15aac git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 5.15.157 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.85 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.26 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.5 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
git.kernel.org/stable/c/76af689a45aa44714b46d1a7de4ffdf851ded896 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/51a6c2af9d20203ddeeaf73314ba8854b38d01bd af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a637fabac554270a851033f5ab402ecb90bc479c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a677ebd8ca2f2632ccdecbad7b87641274e15aac af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/88b7f1143b15b29cccb8392b4f38e75b7bb3e300 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 285447 Fedora Security Update for kernel (FEDORA-2024-33a9ea72d1)
  • 285451 Fedora Security Update for kernel (FEDORA-2024-a56a47ef1b)
  • 6000567 Debian Security Update for linux (DSA 5658-1)

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