Commit def7343f authored May 03, 2022 by Alexey Gladkov Committed by Eric W. Biederman May 03, 2022

ipc: Use the same namespace to modify and validate

In the 1f5c135e ("ipc: Store ipc sysctls in the ipc namespace") I
missed that in addition to the modification of sem_ctls[3], the change
is validated. This validation must occur in the same namespace.

Link: https://lore.kernel.org/lkml/875ymnvryb.fsf@email.froward.int.ebiederm.org/

Fixes: 1f5c135e ("ipc: Store ipc sysctls in the ipc namespace")
Signed-off-by: Alexey Gladkov <legion@kernel.org>
Link: https://lkml.kernel.org/r/b3cb9a25cce6becbef77186bc1216071a08a969b.1651584847.git.legion@kernel.org

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

parent 1f5c135e

ipc/ipc_sysctl.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -68,7 +68,7 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
		ret = proc_dointvec(table, write, buffer, lenp, ppos);

		if (!ret)
		ret = sem_check_semmni(current->nsproxy->ipc_ns);
		ret = sem_check_semmni(ns);

		/*
		* Reset the semmni value if an error happens.