CVE-2021-47310 net: ti: fix UAF in tlan_remove_one

2024-05-2114:35:28

Linux

github.com

linux kernel

vulnerability

net

uaf

tlan_remove_one

priv

free_netdev

cve-2021-47310

AI Score

6.8

Confidence

Low

EPSS

Percentile

13.0%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

net: ti: fix UAF in tlan_remove_one

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

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "a18a8d9cfbb1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "c263ae8c7e4c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "0538b0ab7d2c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "a0a817b2d308",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "b7e5563f2a78",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "f2a062fcfe1d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "93efab0ef2a6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1e0a8b13d355",
        "lessThan": "0336f8ffece6",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/ti/tlan.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.10",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.4.277",
        "versionType": "custom",
        "lessThanOrEqual": "4.4.*"
      },
      {
        "status": "unaffected",
        "version": "4.9.277",
        "versionType": "custom",
        "lessThanOrEqual": "4.9.*"
      },
      {
        "status": "unaffected",
        "version": "4.14.241",
        "versionType": "custom",
        "lessThanOrEqual": "4.14.*"
      },
      {
        "status": "unaffected",
        "version": "4.19.199",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.135",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.53",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.13.5",
        "versionType": "custom",
        "lessThanOrEqual": "5.13.*"
      },
      {
        "status": "unaffected",
        "version": "5.14",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/ti/tlan.c"
    ],
    "defaultStatus": "affected"
  }
]