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statmount: permission check should return EPERM

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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 <miklos@szeredi.hu>
Signed-off-by: Bhavik Sachdev <b.sachdev1904@gmail.com>
Link: https://patch.msgid.link/20251129091455.757724-2-b.sachdev1904@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Bhavik Sachdev
2025-11-29 14:41:20 +05:30
committed by Christian Brauner
parent 8f0b4cce44
commit fccbe38a5d
1 changed files with 1 additions and 1 deletions
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2
fs/namespace.c
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@@ -5780,7 +5780,7 @@ SYSCALL_DEFINE4(statmount, const struct mnt_id_req __user *, req,
if (kreq.mnt_ns_id && (ns != current->nsproxy->mnt_ns) &&
!ns_capable_noaudit(ns->user_ns, CAP_SYS_ADMIN))
return -ENOENT;
return -EPERM;
ks = kmalloc(sizeof(*ks), GFP_KERNEL_ACCOUNT);
if (!ks)