CVE-2024-40919 bnxt_en: Adjust logging of firmware messages in case of released token in __hwrm_send()

2024-07-1212:25:01

Linux

www.cve.org

linux kernel

vnxt_en

adjust logging

firmware messages

token pointer check

null pointer dereference

svace

EPSS

Percentile

15.9%

JSON

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

bnxt_en: Adjust logging of firmware messages in case of released token in __hwrm_send()

In case of token is released due to token->state == BNXT_HWRM_DEFERRED,
released token (set to NULL) is used in log messages. This issue is
expected to be prevented by HWRM_ERR_CODE_PF_UNAVAILABLE error code. But
this error code is returned by recent firmware. So some firmware may not
return it. This may lead to NULL pointer dereference.
Adjust this issue by adding token pointer check.

Found by Linux Verification Center (linuxtesting.org) with 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/broadcom/bnxt/bnxt_hwrm.c"
    ],
    "versions": [
      {
        "version": "8fa4219dba8e",
        "lessThan": "cde177fa235c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8fa4219dba8e",
        "lessThan": "ca6660c95624",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8fa4219dba8e",
        "lessThan": "8b65eaeae88d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "8fa4219dba8e",
        "lessThan": "a9b9741854a9",
        "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/broadcom/bnxt/bnxt_hwrm.c"
    ],
    "versions": [
      {
        "version": "5.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.17",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.95",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.35",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.6",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]