Fix SELinux mprotect execheap error due to mem adjacent to heap #12942
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
It seems SELinux has a bug where memory directly adjacent to the heap is interpreted as heap memory. Dodge this issue by leaving some space between the heap and memory suggested by find_prefered_mmap_base. See phpGH-12932 See https://bugzilla.kernel.org/show_bug.cgi?id=218258
dstogov
approved these changes
Dec 13, 2023
|
@dstogov Thank you for your guidance on this issue! |
|
This is already being fixed, so hopefully this shouldn't bite many people. https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-hotfixes-stable&id=d3bb89ea9c13e5a98d2b7a0ba8e50a77893132cb |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
It seems SELinux has a bug where memory directly adjacent to the heap is interpreted as heap memory. Dodge this issue by leaving some space between the heap and memory suggested by find_prefered_mmap_base.
See GH-12932
See https://bugzilla.kernel.org/show_bug.cgi?id=218258