Описание
In the Linux kernel, the following vulnerability has been resolved:
ASoC: codecs: wcd934x: handle channel mappping list correctly
Currently each channel is added as list to dai channel list, however
there is danger of adding same channel to multiple dai channel list
which endups corrupting the other list where its already added.
This patch ensures that the channel is actually free before adding to
the dai channel list and also ensures that the channel is on the list
before deleting it.
This check was missing previously, and we did not hit this issue as
we were testing very simple usecases with sequence of amixer commands.
A flaw was found in the Linux kernel's wcd934x audio codec driver. The driver fails to verify whether an audio channel is available before adding it to a digital audio interface channel list, or whether the channel is present before removal. A local user could exploit this issue to corrupt internal kernel list structures, resulting in a system crash and Denial of Service (DoS).
Отчет
This vulnerability is rated as having a Low severity for Red Hat Enterprise Linux because exploitation requires local access on systems equipped with specialized Qualcomm audio hardware, limiting the blast radius to a local denial of service. The affected WCD934x codec driver is specific to embedded Qualcomm platforms and is not utilized in standard enterprise server hardware deployments. Consequently, systems running on typical server architectures are not exposed to this issue during normal operation.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | ||
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected |
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Дополнительная информация
Статус:
EPSS
4.4 Medium
CVSS3
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: handle channel mappping list correctly Currently each channel is added as list to dai channel list, however there is danger of adding same channel to multiple dai channel list which endups corrupting the other list where its already added. This patch ensures that the channel is actually free before adding to the dai channel list and also ensures that the channel is on the list before deleting it. This check was missing previously, and we did not hit this issue as we were testing very simple usecases with sequence of amixer commands.
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: handle channel mappping list correctly Currently each channel is added as list to dai channel list, however there is danger of adding same channel to multiple dai channel list which endups corrupting the other list where its already added. This patch ensures that the channel is actually free before adding to the dai channel list and also ensures that the channel is on the list before deleting it. This check was missing previously, and we did not hit this issue as we were testing very simple usecases with sequence of amixer commands.
In the Linux kernel, the following vulnerability has been resolved: A ...
Уязвимость компонента AsoC ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
ALT-PU-2021-5013: package `kernel-image-std-def` update to version 5.10.85-alt1
EPSS
4.4 Medium
CVSS3