CVE-2024-43839 bna: adjust 'name' buf size of bna_tcb and bna_ccb structures

2024-08-1709:21:55

Linux

www.cve.org

linux kernel

bna

bna_tcb

bna_ccb

sprintf

snprintf

svace

static analysis tool

EPSS

Percentile

13.7%

JSON

In the Linux kernel, the following vulnerability has been resolved:

bna: adjust ‘name’ buf size of bna_tcb and bna_ccb structures

To have enough space to write all possible sprintf() args. Currently
‘name’ size is 16, but the first ‘%s’ specifier may already need at
least 16 characters, since ‘bnad->netdev->name’ is used there.

For ‘%d’ specifiers, assume that they require:

1 char for ‘tx_id + tx_info->tcb[i]->id’ sum, BNAD_MAX_TXQ_PER_TX is 8
2 chars for ‘rx_id + rx_info->rx_ctrl[i].ccb->id’, BNAD_MAX_RXP_PER_RX
is 16

And replace sprintf with snprintf.

Detected using the static analysis tool - Svace.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/brocade/bna/bna_types.h",
      "drivers/net/ethernet/brocade/bna/bnad.c"
    ],
    "versions": [
      {
        "version": "8b230ed8ec96",
        "lessThan": "f121740f69ed",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "c90b1cd7758f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "6ce46045f9b9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "6d20c4044ab4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "ab748dd10d87",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "b0ff0cd0847b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "e0f48f51d55f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8b230ed8ec96",
        "lessThan": "c9741a03dc8e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/brocade/bna/bna_types.h",
      "drivers/net/ethernet/brocade/bna/bnad.c"
    ],
    "versions": [
      {
        "version": "2.6.37",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.37",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.320",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.282",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.224",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.165",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.103",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.44",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.3",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]