Re: [PATCH v2 1/1] mm/madvise: replace ptrace attach requirement for process_madvise

On Mon, 11 Jan 2021, Suren Baghdasaryan wrote:

Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ
and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata
and CAP_SYS_NICE for influencing process performance.

Almost missed these -- please cc the LSM mailing list when modifying 
capabilities or other LSM-related things.

-- 
James Morris
[off-list ref]

On Tue, Jan 19, 2021 at 9:02 PM James Morris [off-list ref] wrote:

On Mon, 11 Jan 2021, Suren Baghdasaryan wrote:

quoted

Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ
and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata
and CAP_SYS_NICE for influencing process performance.

Almost missed these -- please cc the LSM mailing list when modifying
capabilities or other LSM-related things.

Thanks for the note. Will definitely include it when sending the next version.

--
James Morris
[off-list ref]

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