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Filename Latest commit message Latest commit date
Dan Carpenter a1d13886fd NTB: ntb_tool: uninitialized heap data in tool_fn_write()
commit 45e1058b77feade4e36402828bfe3e0d3363177b upstream.

The call to:

	ret = simple_write_to_buffer(buf, size, offp, ubuf, size);

will return success if it is able to write even one byte to "buf".
The value of "*offp" controls which byte.  This could result in
reading uninitialized data when we do the sscanf() on the next line.

This code is not really desigined to handle partial writes where
*offp is non-zero and the "buf" is preserved and re-used between writes.
Just ban partial writes and replace the simple_write_to_buffer() with
copy_from_user().

Fixes: 578b881ba9 ("NTB: Add tool test client")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-25 11:18:26 +02:00
arch KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast() 2022-08-25 11:18:16 +02:00
block blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created 2022-08-25 11:17:36 +02:00
certs
crypto
Documentation dt-bindings: arm: qcom: fix MSM8916 MTP compatibles 2022-08-25 11:18:25 +02:00
drivers NTB: ntb_tool: uninitialized heap data in tool_fn_write() 2022-08-25 11:18:26 +02:00
fs NFSv4/pnfs: Fix a use-after-free bug in open 2022-08-25 11:18:22 +02:00
include KVM: Add infrastructure and macro to mark VM as bugged 2022-08-25 11:18:16 +02:00
init
ipc
kernel tracing: Have filter accept "common_cpu" to be consistent 2022-08-25 11:18:19 +02:00
lib
LICENSES
mm mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region 2022-08-25 11:17:58 +02:00
net vsock: Set socket state back to SS_UNCONNECTED in vsock_connect_timeout() 2022-08-25 11:18:25 +02:00
samples
scripts scripts/faddr2line: Fix vmlinux detection on arm64 2022-08-25 11:18:08 +02:00
security apparmor: Fix memleak in aa_simple_write_to_buffer() 2022-08-25 11:18:21 +02:00
sound ALSA: info: Fix llseek return value when using callback 2022-08-25 11:18:18 +02:00
tools tools build: Switch to new openssl API for test-libcrypto 2022-08-25 11:18:25 +02:00
usr
virt KVM: Add infrastructure and macro to mark VM as bugged 2022-08-25 11:18:16 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Makefile: link with -z noexecstack --no-warn-rwx-segments 2022-08-25 11:17:17 +02:00
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.