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can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer Zero the allocated buffer in j1939_session_fresh_new() to ensure it contains no residual data. While there is a potential performance impact if users allocate maximum sized ETP buffers, most real-world use cases are not noticeably affected since the maximum known buffer size is typically around 65K. [mkl: add Message-ID]

Announced Source revision 1
Original source ↗

CVE-2026-80707

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-2026-80707

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": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "348818277a3646d5b9fa60c9d20c00dc4bc86832",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "f3e120a34b336079479fa10f706f0636eaa6e751",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "bbfa49d1e287de44994955b44d19281be3195b44",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "194d67e92197eb820f4c2c6605d9721333b3eba0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "038bad8e16c2e28acf31f0b527a816fb23a57269",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "8604a3b81b9d0ceaf04fee5f52e701f623a179f9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d71dd0c70099914fcd063135da3c580865e924c",
        "lessThan": "eb96c58907922546e415e545fe9a14ea63b02719",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/can/j1939/transport.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.4"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.4",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.265",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.151",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.103",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.44",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.8",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/can/j1939/transport.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80707

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34360 · Revision 1
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Publisher date
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