smb: client: Add check for next_buffer in receive_encrypted_standard()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21844
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-03-12 10:15:16 UTC
Updated2026-05-12 13:16:37 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

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

Problem Types: CWE-476 | CWE-476 CWE-476 NULL Pointer Dereference

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
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b03c8099a738a04d2343547ae6a04e5f0f63d3fa f277e479eea3d1aa18bc712abe1d2bf3dece2e30 git Not specified
CNA Linux Linux affected 858e73ff25639a0cc1f6f8d2587b62c045867e41 f618aeb6cad2307e48a641379db610abcf593edf git Not specified
CNA Linux Linux affected 9f528a8e68327117837b5e28b096f52af4c26a05 24e8e4523d3071bc5143b0db9127d511489f7b3b git Not specified
CNA Linux Linux affected 534733397da26de0303057ce0b93a22bda150365 9e5d99a4cf2e23c716b44862975548415fae5391 git Not specified
CNA Linux Linux affected eec04ea119691e65227a97ce53c0da6b9b74b0b7 a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd git Not specified
CNA Linux Linux affected eec04ea119691e65227a97ce53c0da6b9b74b0b7 554736b583f529ee159aa95af9a0cbc12b5ffc96 git Not specified
CNA Linux Linux affected eec04ea119691e65227a97ce53c0da6b9b74b0b7 860ca5e50f73c2a1cef7eefc9d39d04e275417f7 git Not specified
CNA Linux Linux affected 6.7 Not specified
CNA Linux Linux unaffected 6.7 semver Not specified
CNA Linux Linux unaffected 5.10.235 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.179 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.130 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.80 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.17 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.5 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/05/msg00045.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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