From a1ff0ceb015e11d912da8546baeaa107d8e6a4d3 Mon Sep 17 00:00:00 2001 From: David P Date: Sun, 23 Aug 2020 23:28:18 -0400 Subject: updpkg: libre/linux-libre 5.8.3-1 Signed-off-by: David P --- ...ctl-and-CONFIG-to-disallow-unprivileged-C.patch | 84 ++++++++++++++-------- 1 file changed, 53 insertions(+), 31 deletions(-) (limited to 'libre/linux-libre/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch') diff --git a/libre/linux-libre/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch b/libre/linux-libre/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch index 2914aaac0..ca95df44e 100644 --- a/libre/linux-libre/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch +++ b/libre/linux-libre/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch @@ -1,22 +1,45 @@ -From b4e7e8c02782234ce9409719dd781e9b320970ec Mon Sep 17 00:00:00 2001 +From ee973f29fd8052778034537949843b801e888c58 Mon Sep 17 00:00:00 2001 From: "Jan Alexander Steffens (heftig)" Date: Mon, 16 Sep 2019 04:53:20 +0200 -Subject: [PATCH 1/4] ZEN: Add sysctl and CONFIG to disallow unprivileged +Subject: [PATCH 1/2] ZEN: Add sysctl and CONFIG to disallow unprivileged CLONE_NEWUSER Our default behavior continues to match the vanilla kernel. --- - init/Kconfig | 16 ++++++++++++++++ - kernel/fork.c | 15 +++++++++++++++ - kernel/sysctl.c | 12 ++++++++++++ - kernel/user_namespace.c | 7 +++++++ - 4 files changed, 50 insertions(+) + include/linux/user_namespace.h | 4 ++++ + init/Kconfig | 16 ++++++++++++++++ + kernel/fork.c | 14 ++++++++++++++ + kernel/sysctl.c | 12 ++++++++++++ + kernel/user_namespace.c | 7 +++++++ + 5 files changed, 53 insertions(+) +diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h +index 6ef1c7109fc4..2140091b0b8d 100644 +--- a/include/linux/user_namespace.h ++++ b/include/linux/user_namespace.h +@@ -106,6 +106,8 @@ void dec_ucount(struct ucounts *ucounts, enum ucount_type type); + + #ifdef CONFIG_USER_NS + ++extern int unprivileged_userns_clone; ++ + static inline struct user_namespace *get_user_ns(struct user_namespace *ns) + { + if (ns) +@@ -139,6 +141,8 @@ extern bool current_in_userns(const struct user_namespace *target_ns); + struct ns_common *ns_get_owner(struct ns_common *ns); + #else + ++#define unprivileged_userns_clone 0 ++ + static inline struct user_namespace *get_user_ns(struct user_namespace *ns) + { + return &init_user_ns; diff --git a/init/Kconfig b/init/Kconfig -index 74a5ac65644f..965a628556e8 100644 +index 0498af567f70..078a0b73effd 100644 --- a/init/Kconfig +++ b/init/Kconfig -@@ -1102,6 +1102,22 @@ config USER_NS +@@ -1140,6 +1140,22 @@ config USER_NS If unsure, say N. @@ -40,22 +63,21 @@ index 74a5ac65644f..965a628556e8 100644 bool "PID Namespaces" default y diff --git a/kernel/fork.c b/kernel/fork.c -index 48ed22774efa..ec61454a18d5 100644 +index efc5493203ae..90859b7531d3 100644 --- a/kernel/fork.c +++ b/kernel/fork.c -@@ -106,6 +106,11 @@ +@@ -96,6 +96,10 @@ + #include + #include - #define CREATE_TRACE_POINTS - #include +#ifdef CONFIG_USER_NS -+extern int unprivileged_userns_clone; -+#else -+#define unprivileged_userns_clone 0 ++#include +#endif - - /* - * Minimum number of threads to boot the kernel -@@ -1848,6 +1853,10 @@ static __latent_entropy struct task_struct *copy_process( ++ + #include + #include + #include +@@ -1861,6 +1865,10 @@ static __latent_entropy struct task_struct *copy_process( if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS)) return ERR_PTR(-EINVAL); @@ -66,7 +88,7 @@ index 48ed22774efa..ec61454a18d5 100644 /* * Thread groups must share signals as well, and detached threads * can only be started up within the thread group. -@@ -2948,6 +2957,12 @@ int ksys_unshare(unsigned long unshare_flags) +@@ -2961,6 +2969,12 @@ int ksys_unshare(unsigned long unshare_flags) if (unshare_flags & CLONE_NEWNS) unshare_flags |= CLONE_FS; @@ -80,20 +102,20 @@ index 48ed22774efa..ec61454a18d5 100644 if (err) goto bad_unshare_out; diff --git a/kernel/sysctl.c b/kernel/sysctl.c -index 8a176d8727a3..9500597739a2 100644 +index db1ce7af2563..9b73467e279d 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c -@@ -110,6 +110,9 @@ extern int core_uses_pid; - extern char core_pattern[]; - extern unsigned int core_pipe_limit; +@@ -103,6 +103,9 @@ + #ifdef CONFIG_LOCKUP_DETECTOR + #include #endif +#ifdef CONFIG_USER_NS -+extern int unprivileged_userns_clone; ++#include +#endif - extern int pid_max; - extern int pid_max_min, pid_max_max; - extern int percpu_pagelist_fraction; -@@ -534,6 +537,15 @@ static struct ctl_table kern_table[] = { + + #if defined(CONFIG_SYSCTL) + +@@ -1882,6 +1885,15 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif @@ -110,7 +132,7 @@ index 8a176d8727a3..9500597739a2 100644 { .procname = "tainted", diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c -index 8eadadc478f9..c36ecd19562c 100644 +index 87804e0371fe..66b5afb0d0ee 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -21,6 +21,13 @@ -- cgit v1.2.3