CVE-2021-47501 i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

2024-05-2415:01:49

Linux

github.com

vulnerability

resolved

null pointer

linux kernel

i40e

debugfs

crash

check

vsi type

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.6%

JSON

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

i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

When trying to dump VFs VSI RX/TX descriptors
using debugfs there was a crash
due to NULL pointer dereference in i40e_dbg_dump_desc.
Added a check to i40e_dbg_dump_desc that checks if
VSI type is correct for dumping RX/TX descriptors.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "02e9c290814c",
        "lessThan": "e5b7fb2198ab",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "02e9c290814c",
        "lessThan": "16431e442db2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "02e9c290814c",
        "lessThan": "23ec111bf354",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/intel/i40e/i40e_debugfs.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.12",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.85",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.8",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "5.16",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/intel/i40e/i40e_debugfs.c"
    ],
    "defaultStatus": "affected"
  }
]