CVE-2022-48735 (GCVE-0-2022-48735)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-05-21 08:43
VLAI?
Title
ALSA: hda: Fix UAF of leds class devs at unbinding
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 15509b6344726de22bdbfff88b65341dd0dd33af , < a7de1002135cf94367748ffc695a29812d7633b5 (git)
Affected: 15509b6344726de22bdbfff88b65341dd0dd33af , < 0e629052f013eeb61494d4df2f1f647c2a9aef47 (git)
Affected: 15509b6344726de22bdbfff88b65341dd0dd33af , < 813e9f3e06d22e29872d4fd51b54992d89cf66c8 (git)
Affected: 15509b6344726de22bdbfff88b65341dd0dd33af , < 549f8ffc7b2f7561bea7f90930b6c5104318e87b (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.99 , ≤ 5.10.* (semver)
Unaffected: 5.15.22 , ≤ 5.15.* (semver)
Unaffected: 5.16.8 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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