title: drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup
description: In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup
The commit 8b45a26f2ba9 ("drm/msm/dpu: reserve cdm blocks for writeback
in case of YUV output") introduced a smatch warning about another
conditional block in dpu_encoder_helper_phys_cleanup() which had assumed
hw_pp will always be valid which may not necessarily be true.
Lets fix the other conditional block by making sure hw_pp is valid
before dereferencing it.
Patchwork: https://patchwork.freedesktop.org/patch/574878/
affected:
{
product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: ae4d721ce100, lessThan: fb8bfc6ea3cd, status: affected, versionType: git
version: ae4d721ce100, lessThan: 79592a6e7bdc, status: affected, versionType: git
version: ae4d721ce100, lessThan: eb4f56f3ff57, status: affected, versionType: git
version: ae4d721ce100, lessThan: 7f3d03c48b1e, status: affected, versionType: git
}
{
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 5.19, status: affected
version: 0, lessThan: 5.19, status: unaffected, versionType: custom
version: 6.1.78, lessThanOrEqual: 6.1.*, status: unaffected, versionType: custom
version: 6.6.17, lessThanOrEqual: 6.6.*, status: unaffected, versionType: custom
version: 6.7.5, lessThanOrEqual: 6.7.*, status: unaffected, versionType: custom
version: 6.8, lessThanOrEqual: *, status: unaffected, versionType: original_commit_for_fix
}
