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Filename Latest commit message Latest commit date
Geert Uytterhoeven d5c4594b20 powerpc/security: Fix debugfs data leak on 32-bit 
commit 3b05a1e517e1a8cfda4866ec31d28b2bc4fee4c4 upstream.

"powerpc_security_features" is "unsigned long", i.e. 32-bit or 64-bit,
depending on the platform (PPC_FSL_BOOK3E or PPC_BOOK3S_64).  Hence
casting its address to "u64 *", and calling debugfs_create_x64() is
wrong, and leaks 32-bit of nearby data to userspace on 32-bit platforms.

While all currently defined SEC_FTR_* security feature flags fit in
32-bit, they all have "ULL" suffixes to make them 64-bit constants.
Hence fix the leak by changing the type of "powerpc_security_features"
(and the parameter types of its accessors) to "u64".  This also allows
to drop the cast.

Fixes: 398af57112 ("powerpc/security: Show powerpc_security_features in debugfs")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191021142309.28105-1-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-26 10:00:59 +01:00
arch powerpc/security: Fix debugfs data leak on 32-bit 2020-01-26 10:00:59 +01:00
block block: Fix the type of 'sts' in bsg_queue_rq() 2020-01-23 08:22:44 +01:00
certs
crypto crypto: algif_skcipher - Use chunksize instead of blocksize 2020-01-17 19:48:46 +01:00
Documentation dt-bindings: Add missing 'properties' keyword enclosing 'snps,tso' 2020-01-23 08:22:54 +01:00
drivers mfd: intel-lpss: Add default I2C device properties for Gemini Lake 2020-01-26 10:00:59 +01:00
fs xfs: Sanity check flags of Q_XQUOTARM call 2020-01-26 10:00:59 +01:00
include regulator: ab8500: Remove SYSCLKREQ from enum ab8505_regulator_id 2020-01-23 08:23:00 +01:00
init mm, debug_pagealloc: don't rely on static keys too early 2020-01-23 08:22:40 +01:00
ipc
kernel tick/sched: Annotate lockless access to last_jiffies_update 2020-01-23 08:22:55 +01:00
lib sbitmap: only queue kyber's wait callback if not already active 2020-01-12 12:21:44 +01:00
LICENSES
mm mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio() 2020-01-23 08:22:41 +01:00
net SUNRPC: Fix backchannel latency metrics 2020-01-26 10:00:59 +01:00
samples samples/bpf: Fix broken xdp_rxq_info due to map order assumptions 2020-01-26 10:00:58 +01:00
scripts bpf: Force .BTF section start to zero when dumping from vmlinux 2020-01-26 10:00:58 +01:00
security tomoyo: Suppress RCU warning at list_for_each_entry_rcu(). 2020-01-17 19:49:05 +01:00
sound ALSA: usb-audio: fix sync-ep altsetting sanity check 2020-01-23 08:22:31 +01:00
tools libbpf: Make btf__resolve_size logic always check size error condition 2020-01-26 10:00:58 +01:00
usr gen_initramfs_list.sh: fix 'bad variable name' error 2020-01-09 10:20:00 +01:00
virt KVM: arm/arm64: Properly handle faulting of device mappings 2019-12-31 16:46:24 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap ARM: SoC fixes 2019-11-10 13:41:59 -08:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: Append missed file to the database 2020-01-17 19:48:28 +01:00
Makefile Linux 5.4.14 2020-01-23 08:23:01 +01:00
README

README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.