Fix SELinux mprotect execheap error due to mem adjacent to heap #12942
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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
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@dstogov Thank you for your guidance on this issue! |
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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 |
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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