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authoralegru2021-02-26 18:01:25 +0100
committeralegru2021-02-26 18:01:25 +0100
commit41b7a8475741331a303c491abce4f0ecdfaabc95 (patch)
tree18412667bc92fc9f5ae1b4de1bb70d5558adf648 /0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
parent68945e2e905790b6cb2514ea8d78d1bec60deb7c (diff)
downloadaur-linux-vfio-lts.tar.gz
Update to 5.10.19-1
Diffstat (limited to '0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch')
-rw-r--r--0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch88
1 files changed, 56 insertions, 32 deletions
diff --git a/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch b/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
index 3020b9065fa..5ff280f9653 100644
--- a/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
+++ b/0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
@@ -1,22 +1,44 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From 024a28765039cafbd4b4056d3f213be989e39dc2 Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Mon, 16 Sep 2019 04:53:20 +0200
-Subject: [PATCH] ZEN: Add sysctl and CONFIG to disallow unprivileged
- CLONE_NEWUSER
+Subject: 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 96fc45d1b686..3bc58f03a2cd 100644
+index 0872a5a2e759..a40d8afeb1bb 100644
--- a/init/Kconfig
+++ b/init/Kconfig
-@@ -1084,6 +1084,22 @@ config USER_NS
+@@ -1173,6 +1173,22 @@ config USER_NS
If unsure, say N.
@@ -40,22 +62,21 @@ index 96fc45d1b686..3bc58f03a2cd 100644
bool "PID Namespaces"
default y
diff --git a/kernel/fork.c b/kernel/fork.c
-index 419fff8eb9e5..70da21e5c06a 100644
+index c675fdbd3dce..9266039e28e4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
-@@ -106,6 +106,11 @@
+@@ -97,6 +97,10 @@
+ #include <linux/scs.h>
+ #include <linux/io_uring.h>
- #define CREATE_TRACE_POINTS
- #include <trace/events/task.h>
+#ifdef CONFIG_USER_NS
-+extern int unprivileged_userns_clone;
-+#else
-+#define unprivileged_userns_clone 0
++#include <linux/user_namespace.h>
+#endif
-
- /*
- * Minimum number of threads to boot the kernel
-@@ -1799,6 +1804,10 @@ static __latent_entropy struct task_struct *copy_process(
++
+ #include <asm/pgalloc.h>
+ #include <linux/uaccess.h>
+ #include <asm/mmu_context.h>
+@@ -1863,6 +1867,10 @@ 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 +87,7 @@ index 419fff8eb9e5..70da21e5c06a 100644
/*
* Thread groups must share signals as well, and detached threads
* can only be started up within the thread group.
-@@ -2859,6 +2868,12 @@ int ksys_unshare(unsigned long unshare_flags)
+@@ -2928,6 +2936,12 @@ int ksys_unshare(unsigned long unshare_flags)
if (unshare_flags & CLONE_NEWNS)
unshare_flags |= CLONE_FS;
@@ -80,20 +101,20 @@ index 419fff8eb9e5..70da21e5c06a 100644
if (err)
goto bad_unshare_out;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
-index 70665934d53e..9797869ed829 100644
+index afad085960b8..a94828fb31c2 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 <linux/nmi.h>
#endif
+#ifdef CONFIG_USER_NS
-+extern int unprivileged_userns_clone;
++#include <linux/user_namespace.h>
+#endif
- extern int pid_max;
- extern int pid_max_min, pid_max_max;
- extern int percpu_pagelist_fraction;
-@@ -546,6 +549,15 @@ static struct ctl_table kern_table[] = {
+
+ #if defined(CONFIG_SYSCTL)
+
+@@ -1902,6 +1905,15 @@ static struct ctl_table kern_table[] = {
.proc_handler = proc_dointvec,
},
#endif
@@ -110,7 +131,7 @@ index 70665934d53e..9797869ed829 100644
{
.procname = "tainted",
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
-index 8eadadc478f9..c36ecd19562c 100644
+index e703d5d9cbe8..5758274feaee 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -21,6 +21,13 @@
@@ -127,3 +148,6 @@ index 8eadadc478f9..c36ecd19562c 100644
static struct kmem_cache *user_ns_cachep __read_mostly;
static DEFINE_MUTEX(userns_state_mutex);
+--
+cgit v1.2.3-1-gf6bb5
+