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

Type: advisorySource: Official CVE List1 source record

In 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.

Announced Group revision 1
Original source ↗

CVE-2025-21844

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-21844

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b03c8099a738a04d2343547ae6a04e5f0f63d3fa",
        "lessThan": "f277e479eea3d1aa18bc712abe1d2bf3dece2e30",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "858e73ff25639a0cc1f6f8d2587b62c045867e41",
        "lessThan": "f618aeb6cad2307e48a641379db610abcf593edf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9f528a8e68327117837b5e28b096f52af4c26a05",
        "lessThan": "24e8e4523d3071bc5143b0db9127d511489f7b3b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "534733397da26de0303057ce0b93a22bda150365",
        "lessThan": "9e5d99a4cf2e23c716b44862975548415fae5391",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "eec04ea119691e65227a97ce53c0da6b9b74b0b7",
        "lessThan": "a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "eec04ea119691e65227a97ce53c0da6b9b74b0b7",
        "lessThan": "554736b583f529ee159aa95af9a0cbc12b5ffc96",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "eec04ea119691e65227a97ce53c0da6b9b74b0b7",
        "lessThan": "860ca5e50f73c2a1cef7eefc9d39d04e275417f7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.10.211",
        "lessThan": "5.10.235",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.15.150",
        "lessThan": "5.15.179",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.1.69",
        "lessThan": "6.1.130",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.6.8",
        "lessThan": "6.6.80",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "fs/smb/client/smb2ops.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.235",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.179",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.130",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.80",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.17",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.13.5",
        "versionType": "semver",
        "lessThanOrEqual": "6.13.*"
      },
      {
        "status": "unaffected",
        "version": "6.14",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/smb/client/smb2ops.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-21844

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#26955 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2025-21844 · Revision 1Source updated