CVE-2022-48753 block: fix memory leak in disk_register_independent_access_ranges

2024-06-2011:13:33

Linux

www.cve.org

cve-2022-48753

block

fix memory leak

disk_register_independent_access_ranges

linux kernel

kobject_init_and_add()

kobject_put()

blk_ia_ranges_sysfs_release

0.0004 Low

EPSS

Percentile

9.1%

JSON

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

block: fix memory leak in disk_register_independent_access_ranges

kobject_init_and_add() takes reference even when it fails.
According to the doc of kobject_init_and_add()

If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object.

Fix this issue by adding kobject_put().
Callback function blk_ia_ranges_sysfs_release() in kobject_put()
can handle the pointer “iars” properly.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-ia-ranges.c"
    ],
    "versions": [
      {
        "version": "a2247f19ee1c",
        "lessThan": "fe4214a07e0b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a2247f19ee1c",
        "lessThan": "83114df32ae7",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-ia-ranges.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16.5",
        "lessThanOrEqual": "5.16.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]