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net: hinic: fix mailbox segment buffer overflow

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: net: hinic: fix mailbox segment buffer overflow check_mbox_seq_id_and_seg_len() validates that seq_id does not exceed SEQ_ID_MAX_VAL (42) and seg_len does not exceed MBOX_SEG_LEN (48). However, this allows the last segment (seq_id=42) to carry a full 48-byte payload, writing to offset 42*48=2016 for 48 bytes (ending at byte 2064). The receive buffer is only MBOX_MAX_BUF_SZ (2048) bytes, resulting in a 16-byte heap buffer overflow. The hinic3 driver already handles this correctly by defining MBOX_LAST_SEG_MAX_LEN and rejecting the last segment when it exceeds the remaining buffer space. Apply the same fix to the hinic driver.

Announced Source revision 1
Original source ↗

CVE-2026-97957

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-2026-97957

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": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "7cc974799fde846eda2d8f00ad4f8e1810eb0499",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "8de1e23bd91fe3a6683e4bc574e2d6bcb0eef920",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "72be1fd5d256dde748c0905c5e1749a119cad5bd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "c622bbc212207d7c6bbd69dd88f0c3a3f5853d16",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "eca54a092d5f7b497b458ff5a6f66d4f7bfb6674",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "9f6ad383901d0cb1c8ea5f7f3160fabfe1540eb5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "513f7b16ed0cffae9348151c72bed17c7073096f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c",
        "lessThan": "5d4d985957434867bbe85e4fa5e638f3e48ad522",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.111",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.53",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.7",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-97957

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#38097 · Revision 1
Added to Heist Feed
Publisher date
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