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Probes fixes for v6.12-rc1:

Browse source 
- uprobes: fix kernel info leak via "[uprobes]" vma
    Fix uprobes not to expose the uninitialized page for trampoline
    buffer to user space, which can leak kernel info.
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Merge tag 'probes-fixes-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull probes fix from Masami Hiramatsu:

 - uprobes: fix kernel info leak via "[uprobes]" vma

   Fix uprobes not to expose the uninitialized page for trampoline
   buffer to user space, which can leak kernel info.

* tag 'probes-fixes-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  uprobes: fix kernel info leak via "[uprobes]" vma
This commit is contained in:
Linus Torvalds 2024-09-30 11:06:01 -07:00
commit 190ecde722
1 changed files with 1 additions and 1 deletions
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2
kernel/events/uprobes.c
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@ -1545,7 +1545,7 @@ static struct xol_area *__create_xol_area(unsigned long vaddr)
if (!area->bitmap)
goto free_area;
area->page = alloc_page(GFP_HIGHUSER);
area->page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
if (!area->page)
goto free_bitmap;