From 8f76da3b3a80985bbf9aee2560fe6f3bb93ba1da Mon Sep 17 00:00:00 2001 From: David Runge Date: Wed, 13 Nov 2019 22:22:14 +0100 Subject: PKGBUILD: Ugrading to 4.19.82.30. Updating maintainer info. Merging current Arch specific patches. Replacing all msg2 calls with echo. --- ...to-disallow-unprivileged-CLONE_NEWUSER-by.patch | 101 --------------------- 1 file changed, 101 deletions(-) delete mode 100644 0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch (limited to '0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch') diff --git a/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch b/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch deleted file mode 100644 index e57df3b..0000000 --- a/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch +++ /dev/null @@ -1,101 +0,0 @@ -From 1a47eb71988a919e811ce558f6f58855155c6218 Mon Sep 17 00:00:00 2001 -From: Serge Hallyn -Date: Fri, 31 May 2013 19:12:12 +0100 -Subject: [PATCH] add sysctl to disallow unprivileged CLONE_NEWUSER by default - -Signed-off-by: Serge Hallyn -[bwh: Remove unneeded binary sysctl bits] -Signed-off-by: Daniel Micay ---- - kernel/fork.c | 15 +++++++++++++++ - kernel/sysctl.c | 12 ++++++++++++ - kernel/user_namespace.c | 3 +++ - 3 files changed, 30 insertions(+) - -diff --git a/kernel/fork.c b/kernel/fork.c -index 8ed48ca2cc43..e02823819ab7 100644 ---- a/kernel/fork.c -+++ b/kernel/fork.c -@@ -103,6 +103,11 @@ - - #define CREATE_TRACE_POINTS - #include -+#ifdef CONFIG_USER_NS -+extern int unprivileged_userns_clone; -+#else -+#define unprivileged_userns_clone 0 -+#endif - - /* - * Minimum number of threads to boot the kernel -@@ -1625,6 +1630,10 @@ static __latent_entropy struct task_struct *copy_process( - if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS)) - return ERR_PTR(-EINVAL); - -+ if ((clone_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) -+ if (!capable(CAP_SYS_ADMIN)) -+ return ERR_PTR(-EPERM); -+ - /* - * Thread groups must share signals as well, and detached threads - * can only be started up within the thread group. -@@ -2421,6 +2430,12 @@ int ksys_unshare(unsigned long unshare_flags) - if (unshare_flags & CLONE_NEWNS) - unshare_flags |= CLONE_FS; - -+ if ((unshare_flags & CLONE_NEWUSER) && !unprivileged_userns_clone) { -+ err = -EPERM; -+ if (!capable(CAP_SYS_ADMIN)) -+ goto bad_unshare_out; -+ } -+ - err = check_unshare_flags(unshare_flags); - if (err) - goto bad_unshare_out; -diff --git a/kernel/sysctl.c b/kernel/sysctl.c -index 2d9837c0aff4..eb5236c069fc 100644 ---- a/kernel/sysctl.c -+++ b/kernel/sysctl.c -@@ -105,6 +105,9 @@ extern int core_uses_pid; - extern char core_pattern[]; - extern unsigned int core_pipe_limit; - #endif -+#ifdef CONFIG_USER_NS -+extern int unprivileged_userns_clone; -+#endif - extern int pid_max; - extern int pid_max_min, pid_max_max; - extern int percpu_pagelist_fraction; -@@ -519,6 +522,15 @@ static struct ctl_table kern_table[] = { - .proc_handler = proc_dointvec, - }, - #endif -+#ifdef CONFIG_USER_NS -+ { -+ .procname = "unprivileged_userns_clone", -+ .data = &unprivileged_userns_clone, -+ .maxlen = sizeof(int), -+ .mode = 0644, -+ .proc_handler = proc_dointvec, -+ }, -+#endif - #ifdef CONFIG_PROC_SYSCTL - { - .procname = "tainted", -diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c -index e5222b5fb4fe..c941a66e51d1 100644 ---- a/kernel/user_namespace.c -+++ b/kernel/user_namespace.c -@@ -26,6 +26,9 @@ - #include - #include - -+/* sysctl */ -+int unprivileged_userns_clone; -+ - static struct kmem_cache *user_ns_cachep __read_mostly; - static DEFINE_MUTEX(userns_state_mutex); - --- -2.19.0 - -- cgit v1.2.3