CVE-2021-47009 KEYS: trusted: Fix memory leak on object td

2024-02-2808:13:28

Linux

github.com

linux kernel

vulnerability

memory leak

keys trusted

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

KEYS: trusted: Fix memory leak on object td

Two error return paths are neglecting to free allocated object td,
causing a memory leak. Fix this by returning via the error return
path that securely kfree’s td.

Fixes clang scan-build warning:
security/keys/trusted-keys/trusted_tpm1.c:496:10: warning: Potential
memory leak [unix.Malloc]

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "9d83cc1a1e7f",
        "lessThan": "31c9a4b24d86",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "8cfc8d629421",
        "lessThan": "1c4031014106",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5df16caada3f",
        "lessThan": "3e24fbd37e72",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5df16caada3f",
        "lessThan": "83a775d5f9bf",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "security/keys/trusted-keys/trusted_tpm1.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.12",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.38",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.11.22",
        "versionType": "custom",
        "lessThanOrEqual": "5.11.*"
      },
      {
        "status": "unaffected",
        "version": "5.12.5",
        "versionType": "custom",
        "lessThanOrEqual": "5.12.*"
      },
      {
        "status": "unaffected",
        "version": "5.13",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "security/keys/trusted-keys/trusted_tpm1.c"
    ],
    "defaultStatus": "affected"
  }
]