CVE-2021-47054 bus: qcom: Put child node before return

2024-02-2922:37:29

Linux

github.com

linux kernel

vulnerability

cve-2021-47054

reference count

qcom

AI Score

6.7

Confidence

Low

EPSS

Percentile

13.0%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

bus: qcom: Put child node before return

Put child node before return to fix potential reference count leak.
Generally, the reference count of child is incremented and decremented
automatically in the macro for_each_available_child_of_node() and should
be decremented manually if the loop is broken in loop body.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "a6191e91c10e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "94810fc52925",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "a399dd80e697",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "3a76ec28824c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "00f6abd3509b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "6b68c03dfc79",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "c6f8e0dc8da1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "335a12754808",
        "lessThan": "ac6ad7c2a862",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/bus/qcom-ebi2.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.9"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.9",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.9.269",
        "versionType": "custom",
        "lessThanOrEqual": "4.9.*"
      },
      {
        "status": "unaffected",
        "version": "4.14.233",
        "versionType": "custom",
        "lessThanOrEqual": "4.14.*"
      },
      {
        "status": "unaffected",
        "version": "4.19.191",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.119",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.37",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.11.21",
        "versionType": "custom",
        "lessThanOrEqual": "5.11.*"
      },
      {
        "status": "unaffected",
        "version": "5.12.4",
        "versionType": "custom",
        "lessThanOrEqual": "5.12.*"
      },
      {
        "status": "unaffected",
        "version": "5.13",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/bus/qcom-ebi2.c"
    ],
    "defaultStatus": "affected"
  }
]