CVE-2021-47311

2024-05-2115:15:18

Linux

web.nvd.nist.gov

linux kernel

vulnerability

fix

uaf

qcom/emac

netdev

free_netdev

AI Score

6.7

Confidence

Low

EPSS

Percentile

10.3%

JSON

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

net: qcom/emac: fix UAF in emac_remove

adpt is netdev private data and it cannot be
used after free_netdev() call. Using adpt after free_netdev()
can cause UAF bug. Fix it by moving free_netdev() at the end of the
function.

Affected configurations

Vulners

Node

linuxlinux_kernelRange4.9–4.9.277

linuxlinux_kernelRange4.10.0–4.14.241

linuxlinux_kernelRange4.15.0–4.19.199

linuxlinux_kernelRange4.20.0–5.4.135

linuxlinux_kernelRange5.5.0–5.10.53

linuxlinux_kernelRange5.11.0–5.13.5

linuxlinux_kernelRange5.14.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

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/qualcomm/emac/emac.c"
    ],
    "versions": [
      {
        "version": "54e19bc74f33",
        "lessThan": "4d04a42b926e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "b1e091331920",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "11e9d163d631",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "2b70ca92847c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "b560521eca03",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "8a225a6e07a5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "54e19bc74f33",
        "lessThan": "ad297cd2db89",
        "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/qualcomm/emac/emac.c"
    ],
    "versions": [
      {
        "version": "4.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.9",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.9.277",
        "lessThanOrEqual": "4.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.14.241",
        "lessThanOrEqual": "4.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.199",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.135",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.53",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13.5",
        "lessThanOrEqual": "5.13.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.14",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]