CVE-2024-27046 nfp: flower: handle acti_netdevs allocation failure

2024-05-0112:54:21

Linux

www.cve.org

linux

kernel

vulnerability

nfp

flower

acti_netdevs

allocation_failure

kmalloc_array

null_pointer_dereference

patch

check

delayed_work

rescheduled

AI Score

7.6

Confidence

High

EPSS

Percentile

13.0%

JSON

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

nfp: flower: handle acti_netdevs allocation failure

The kmalloc_array() in nfp_fl_lag_do_work() will return null, if
the physical memory has run out. As a result, if we dereference
the acti_netdevs, the null pointer dereference bugs will happen.

This patch adds a check to judge whether allocation failure occurs.
If it happens, the delayed work will be rescheduled and try again.

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/netronome/nfp/flower/lag_conf.c"
    ],
    "versions": [
      {
        "version": "bb9a8d031140",
        "lessThan": "d746889db75a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "3b1e8a617eb0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "928705e34101",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "0d387dc503f9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "c9b4e220dd18",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "408ba7fd04f9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "c8df9203bf22",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "9d8eb1238377",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb9a8d031140",
        "lessThan": "84e95149bd34",
        "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/netronome/nfp/flower/lag_conf.c"
    ],
    "versions": [
      {
        "version": "4.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.18",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.311",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.273",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.214",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.153",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.83",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.23",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.11",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.2",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]