CVE-2023-52469 drivers/amd/pm: fix a use-after-free in kv_parse_power_table

2024-02-2508:16:33

Linux

www.cve.org

linux kernel

vulnerability

resolved

use-after-free

kv_parse_power_table

allocated

control flow

call chains

for loop

7.8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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

drivers/amd/pm: fix a use-after-free in kv_parse_power_table

When ps allocated by kzalloc equals to NULL, kv_parse_power_table
frees adev->pm.dpm.ps that allocated before. However, after the control
flow goes through the following call chains:

kv_parse_power_table
|-> kv_dpm_init
|-> kv_dpm_sw_init
|-> kv_dpm_fini

The adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its
first free in kv_parse_power_table and causes a use-after-free bug.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c"
    ],
    "versions": [
      {
        "version": "a2e73f56fa62",
        "lessThan": "8a27d9d9fc9b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "8b55b06e737f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "520e213a0b97",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "b6dcba02ee17",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "35fa2394d26e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "95084632a65d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "3426f059eacc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2e73f56fa62",
        "lessThan": "28dd788382c4",
        "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/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c"
    ],
    "versions": [
      {
        "version": "4.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.2",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.306",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.268",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.209",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.148",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.75",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]