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Alexey Dobriyan d497efd805 proc: revalidate kernel thread inodes to root:root 
[ Upstream commit 2e0ad552f5 ]

task_dump_owner() has the following code:

	mm = task->mm;
	if (mm) {
		if (get_dumpable(mm) != SUID_DUMP_USER) {
			uid = ...
		}
	}

Check for ->mm is buggy -- kernel thread might be borrowing mm
and inode will go to some random uid:gid pair.

Link: http://lkml.kernel.org/r/20180412220109.GA20978@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-21 04:02:46 +09:00
arch parisc: time: Convert read_persistent_clock() to read_persistent_clock64() 2018-06-21 04:02:45 +09:00
block blkcg: init root blkcg_gq under lock 2018-06-21 04:02:44 +09:00
certs
crypto PKCS#7: fix direct verification of SignerInfo signature 2018-05-30 07:52:01 +02:00
Documentation dt-bindings: dmaengine: rcar-dmac: document R8A77965 support 2018-06-21 04:02:42 +09:00
drivers scsi: isci: Fix infinite loop in while loop 2018-06-21 04:02:46 +09:00
firmware
fs proc: revalidate kernel thread inodes to root:root 2018-06-21 04:02:46 +09:00
include soc: bcm2835: Make !RASPBERRYPI_FIRMWARE dummies return failure 2018-06-21 04:02:42 +09:00
init
ipc ipc/shm: fix shmat() nil address after round-down when remapping 2018-05-30 07:51:49 +02:00
kernel tracing: Make the snapshot trigger work with instances 2018-06-05 11:41:56 +02:00
lib lib/test_kmod.c: fix limit check on number of test devices created 2018-05-30 07:52:14 +02:00
mm mmap: relax file size limit for regular files 2018-06-11 22:49:18 +02:00
net netfilter: nf_tables: fix out-of-bounds in nft_chain_commit_update 2018-06-21 04:02:44 +09:00
samples samples/bpf: Partially fixes the bpf.o build 2018-04-26 11:02:12 +02:00
scripts kconfig: Avoid format overflow warning from GCC 8.1 2018-06-11 22:49:18 +02:00
security selinux: KASAN: slab-out-of-bounds in xattr_getsecurity 2018-06-05 11:41:56 +02:00
sound ASoC: msm8916-wcd-analog: use threaded context for mbhc events 2018-06-21 04:02:44 +09:00
tools perf report: Fix switching to another perf.data file 2018-06-21 04:02:41 +09:00
usr
virt KVM: arm/arm64: vgic: Add missing irq_lock to vgic_mmio_read_pending 2018-05-30 07:52:15 +02:00
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MAINTAINERS dt-bindings: Document mti,mips-cpc binding 2018-03-15 10:54:35 +01:00
Makefile Linux 4.14.50 2018-06-16 09:45:18 +02:00
README

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.