vulnerability

Ubuntu: (Multiple Advisories) (CVE-2024-42088): Linux kernel kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:M/C:N/I:N/A:C)
Published
Jul 29, 2024
Added
Nov 4, 2024
Modified
Feb 20, 2025

Description

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

ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link

Commit e70b8dd26711 ("ASoC: mediatek: mt8195: Remove afe-dai component
and rework codec link") removed the codec entry for the ETDM1_OUT_BE
dai link entirely instead of replacing it with COMP_EMPTY(). This worked
by accident as the remaining COMP_EMPTY() platform entry became the codec
entry, and the platform entry became completely empty, effectively the
same as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn't do anything
for platform entries.

This causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe()
in sound/soc/mediatek/common/mtk-soundcard-driver.c:

for_each_card_prelinks(card, i, dai_link) {
if (adsp_node && !strncmp(dai_link->name, "AFE_SOF", strlen("AFE_SOF")))
dai_link->platforms->of_node = adsp_node;
else if (!dai_link->platforms->name && !dai_link->platforms->of_node)
dai_link->platforms->of_node = platform_node;
}

where the code expects the platforms array to have space for at least one entry.

Add an COMP_EMPTY() entry so that dai_link->platforms has space.

Solution(s)

ubuntu-upgrade-linux-image-6-8-0-1002-gkeopubuntu-upgrade-linux-image-6-8-0-1013-gkeubuntu-upgrade-linux-image-6-8-0-1014-ibmubuntu-upgrade-linux-image-6-8-0-1014-raspiubuntu-upgrade-linux-image-6-8-0-1015-oracleubuntu-upgrade-linux-image-6-8-0-1015-oracle-64kubuntu-upgrade-linux-image-6-8-0-1016-azureubuntu-upgrade-linux-image-6-8-0-1016-azure-fdeubuntu-upgrade-linux-image-6-8-0-1016-gcpubuntu-upgrade-linux-image-6-8-0-1016-oemubuntu-upgrade-linux-image-6-8-0-1017-azureubuntu-upgrade-linux-image-6-8-0-1017-azure-fdeubuntu-upgrade-linux-image-6-8-0-1017-gcpubuntu-upgrade-linux-image-6-8-0-1017-nvidiaubuntu-upgrade-linux-image-6-8-0-1017-nvidia-64kubuntu-upgrade-linux-image-6-8-0-1017-nvidia-lowlatencyubuntu-upgrade-linux-image-6-8-0-1017-nvidia-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-1018-awsubuntu-upgrade-linux-image-6-8-0-48-genericubuntu-upgrade-linux-image-6-8-0-48-generic-64kubuntu-upgrade-linux-image-6-8-0-48-lowlatencyubuntu-upgrade-linux-image-6-8-0-48-lowlatency-64kubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-6-8ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-24-04ubuntu-upgrade-linux-image-lowlatency-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-hwe-24-04ubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-6-8ubuntu-upgrade-linux-image-nvidia-64kubuntu-upgrade-linux-image-nvidia-64k-6-8ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04ubuntu-upgrade-linux-image-nvidia-hwe-22-04ubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-upgrade-linux-image-nvidia-lowlatency-64kubuntu-upgrade-linux-image-oem-22-04ubuntu-upgrade-linux-image-oem-22-04aubuntu-upgrade-linux-image-oem-22-04bubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oem-22-04dubuntu-upgrade-linux-image-oem-24-04ubuntu-upgrade-linux-image-oem-24-04aubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-22-04ubuntu-upgrade-linux-image-virtual-hwe-24-04
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