From 1b3c57d7ba462485ab99bccb8566c6d9919d518e Mon Sep 17 00:00:00 2001 From: David P Date: Tue, 31 Jul 2018 20:22:10 -0400 Subject: upgpkg: kernels/linux-libre-pae 4.17.11_gnu-1 Signed-off-by: David P --- ...to-disallow-unprivileged-CLONE_NEWUSER-by.patch | 103 --------------------- 1 file changed, 103 deletions(-) delete mode 100644 kernels/linux-libre-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch (limited to 'kernels/linux-libre-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch') diff --git a/kernels/linux-libre-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch b/kernels/linux-libre-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch deleted file mode 100644 index ef2a8aa68..000000000 --- a/kernels/linux-libre-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch +++ /dev/null @@ -1,103 +0,0 @@ -From 9a5adbc45b1c7d43fe4b27936f2a6939660617a1 Mon Sep 17 00:00:00 2001 -Message-Id: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com> -From: Serge Hallyn -Date: Fri, 31 May 2013 19:12:12 +0100 -Subject: [PATCH 1/3] 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 a5d21c42acfc..675eb3f3a1d1 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 -@@ -1592,6 +1597,10 @@ 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. -@@ -2386,6 +2395,12 @@ 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 6a78cf70761d..35a1d24282f4 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 246d4d4ce5c7..f64432b45cec 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); - --- -2.17.1 - -- cgit v1.2.3