CVE-2026-89944 PUBLISHED

ASoC: hdac_hda: Fix hlink refcount leak on component registration failure

Assigner: Linux
Reserved: 11.09.2026 Published: 16.09.2026 Updated: 16.09.2026

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

ASoC: hdac_hda: Fix hlink refcount leak on component registration failure

hdac_hda_dev_probe() gets the HDA link with snd_hdac_ext_bus_link_get() before registering the ASoC component. If component registration fails, the function returns without dropping the link reference.

Always call snd_hdac_ext_bus_link_put() after the registration attempt so the reference taken during probe is balanced on both success and failure.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 6bae5ea9498926440ffc883f3dbceb0adc65e492 to 7eef9ae3b4ef782557526dd8ba0c206f028d8c2f (excl.)
  • affected from 6bae5ea9498926440ffc883f3dbceb0adc65e492 to e8ea01a0457080b0cc7c69c430c0ab65d84dc377 (excl.)
  • affected from 6bae5ea9498926440ffc883f3dbceb0adc65e492 to cb6b0b1a9d5a61ef841739d42c6211094e9c8e2c (excl.)
  • affected from 6bae5ea9498926440ffc883f3dbceb0adc65e492 to 6ad4892c4f5cb437a928a02f5b7d37d496aa9268 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.20 is affected
  • unaffected from 0 to 4.20 (excl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.51 to 6.18.* (incl.)
  • unaffected from 7.2.5 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References