CVE-2024-40937 gve: Clear napi->skb before dev_kfree_skb_any()

2024-07-1212:25:13

Linux

www.cve.org

vulnerability resolved

linux kernel

gve

clear napi->skb

dev_kfree_skb_any

gve_rx_free_skb

napi->skb

dev_kfree_skb_any

napi_get_frags

EPSS

Percentile

15.9%

JSON

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

gve: Clear napi->skb before dev_kfree_skb_any()

gve_rx_free_skb incorrectly leaves napi->skb referencing an skb after it
is freed with dev_kfree_skb_any(). This can result in a subsequent call
to napi_get_frags returning a dangling pointer.

Fix this by clearing napi->skb before the skb is freed.

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/google/gve/gve_rx_dqo.c"
    ],
    "versions": [
      {
        "version": "9b8dd5e5ea48",
        "lessThan": "75afd8724739",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b8dd5e5ea48",
        "lessThan": "d22128499111",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b8dd5e5ea48",
        "lessThan": "2ce5341c3699",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b8dd5e5ea48",
        "lessThan": "a68184d5b420",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9b8dd5e5ea48",
        "lessThan": "6f4d93b78ade",
        "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/google/gve/gve_rx_dqo.c"
    ],
    "versions": [
      {
        "version": "5.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.14",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.162",
        "lessThanOrEqual": "5.15.*",
        "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"
      }
    ]
  }
]