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Petersen" , Andrew Donnellan Subject: [PATCH v7 1/3] statmount: permission check should return EPERM Date: Sat, 29 Nov 2025 14:41:20 +0530 Message-ID: <20251129091455.757724-2-b.sachdev1904@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251129091455.757724-1-b.sachdev1904@gmail.com> References: <20251129091455.757724-1-b.sachdev1904@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Currently, statmount() returns ENOENT when caller is not CAP_SYS_ADMIN in the user namespace owner of target mount namespace. This should be EPERM instead. Suggested-by: Miklos Szeredi Signed-off-by: Bhavik Sachdev --- fs/namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/namespace.c b/fs/namespace.c index 2bad25709b2c..ee36d67f1ac2 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -5795,7 +5795,7 @@ SYSCALL_DEFINE4(statmount, const struct mnt_id_req __= user *, req, =20 if (kreq.mnt_ns_id && (ns !=3D current->nsproxy->mnt_ns) && !ns_capable_noaudit(ns->user_ns, CAP_SYS_ADMIN)) - return -ENOENT; + return -EPERM; =20 ks =3D kmalloc(sizeof(*ks), GFP_KERNEL_ACCOUNT); if (!ks) --=20 2.52.0