github - ghsa-cq4f-h5g8-8r5h

ghsa-cq4f-h5g8-8r5h

Vulnerability from github

Published

2024-06-20 12:31

Modified

2024-08-19 18:32

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

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

ALSA: hda: Fix UAF of leds class devs at unbinding

The LED class devices that are created by HD-audio codec drivers are registered via devm_led_classdev_register() and associated with the HD-audio codec device. Unfortunately, it turned out that the devres release doesn't work for this case; namely, since the codec resource release happens before the devm call chain, it triggers a NULL dereference or a UAF for a stale set_brightness_delay callback.

For fixing the bug, this patch changes the LED class device register and unregister in a manual manner without devres, keeping the instances in hda_gen_spec.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48735"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:11Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: Fix UAF of leds class devs at unbinding\n\nThe LED class devices that are created by HD-audio codec drivers are\nregistered via devm_led_classdev_register() and associated with the\nHD-audio codec device.  Unfortunately, it turned out that the devres\nrelease doesn\u0027t work for this case; namely, since the codec resource\nrelease happens before the devm call chain, it triggers a NULL\ndereference or a UAF for a stale set_brightness_delay callback.\n\nFor fixing the bug, this patch changes the LED class device register\nand unregister in a manual manner without devres, keeping the\ninstances in hda_gen_spec.",
  "id": "GHSA-cq4f-h5g8-8r5h",
  "modified": "2024-08-19T18:32:03Z",
  "published": "2024-06-20T12:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48735"
    },
    {
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      "url": "https://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b"
    },
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    },
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  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2022-48735

Vulnerability from cvelistv5

Published

2024-06-20 11:13

Modified

2024-12-19 08:06

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix UAF of leds class devs at unbinding The LED class devices that are created by HD-audio codec drivers are registered via devm_led_classdev_register() and associated with the HD-audio codec device. Unfortunately, it turned out that the devres release doesn't work for this case; namely, since the codec resource release happens before the devm call chain, it triggers a NULL dereference or a UAF for a stale set_brightness_delay callback. For fixing the bug, this patch changes the LED class device register and unregister in a manual manner without devres, keeping the instances in hda_gen_spec.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5
	https://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47
	https://git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8
	https://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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