| index : packages | |
| Archlinux32 package modifications | gitolite user |
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| -rw-r--r-- | extra/linux-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch | 93 | ||||
| -rw-r--r-- | extra/linux-pae/PKGBUILD | 4 |
diff --git a/extra/linux-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch b/extra/linux-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch deleted file mode 100644 index 1e64e19f..00000000 --- a/extra/linux-pae/0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch +++ /dev/null @@ -1,93 +0,0 @@ -From 9a5adbc45b1c7d43fe4b27936f2a6939660617a1 Mon Sep 17 00:00:00 2001 -Message-Id: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com> -From: Serge Hallyn <serge.hallyn@canonical.com> -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 <serge.hallyn@ubuntu.com> -[bwh: Remove unneeded binary sysctl bits] -Signed-off-by: Daniel Micay <danielmicay@gmail.com> ---- - 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 <trace/events/task.h> -+#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 -@@ -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 <linux/bsearch.h> - #include <linux/sort.h> - -+/* sysctl */ -+int unprivileged_userns_clone; -+ - static struct kmem_cache *user_ns_cachep __read_mostly; - static DEFINE_MUTEX(userns_state_mutex); - --- -2.17.1 - diff --git a/extra/linux-pae/PKGBUILD b/extra/linux-pae/PKGBUILD index 9cf7aac7..995f0c0d 100644 --- a/extra/linux-pae/PKGBUILD +++ b/extra/linux-pae/PKGBUILD @@ -18,7 +18,6 @@ source=( 60-linux.hook # pacman hook for depmod 90-linux.hook # pacman hook for initramfs regeneration linux.preset # standard config files for mkinitcpio ramdisk - 0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch ) validpgpkeys=( 'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds @@ -41,9 +40,6 @@ prepare() { # add latest fixes from stable queue, if needed # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git - # disable USER_NS for non-root users by default - patch -Np1 -i ../0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch - cat ../config - >.config <<END CONFIG_LOCALVERSION="${_kernelname}" CONFIG_LOCALVERSION_AUTO=n |