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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
git.kernel.org/linus/549f8ffc7b2f7561bea7f90930b6c5104318e87b (5.17-rc3)
git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47
git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b
git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8
git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5
launchpad.net/bugs/cve/CVE-2022-48735
nvd.nist.gov/vuln/detail/CVE-2022-48735
security-tracker.debian.org/tracker/CVE-2022-48735
www.cve.org/CVERecord?id=CVE-2022-48735