cgroup-v1: Require capabilities to set release_agent

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The cgroup release_agent is called with call_usermodehelper.  The function
call_usermodehelper starts the release_agent with a full set fo capabilities.
Therefore require capabilities when setting the release_agaent.

Reported-by: Tabitha Sable <tabitha.c.sable@gmail.com>
Tested-by: Tabitha Sable <tabitha.c.sable@gmail.com>
Fixes: 81a6a5cdd2 ("Task Control Groups: automatic userspace notification of idle cgroups")
Cc: stable@vger.kernel.org # v2.6.24+
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Eric W. Biederman 2022-01-20 11:04:01 -06:00 • committed by Tejun Heo

parent c80d401c52

commit 24f6008564

1 changed files with 14 additions and 0 deletions

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kernel/cgroup/cgroup-v1.c

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