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Filename Latest commit message Latest commit date
Zheng Wang a2a5d3a584 memstick: r592: Fix UAF bug in r592_remove due to race condition
[ Upstream commit 63264422785021704c39b38f65a78ab9e4a186d7 ]

In r592_probe, dev->detect_timer was bound with r592_detect_timer.
In r592_irq function, the timer function will be invoked by mod_timer.

If we remove the module which will call hantro_release to make cleanup,
there may be a unfinished work. The possible sequence is as follows,
which will cause a typical UAF bug.

Fix it by canceling the work before cleanup in r592_remove.

CPU0                  CPU1

                    |r592_detect_timer
r592_remove         |
  memstick_free_host|
  put_device;       |
  kfree(host);      |
                    |
                    | queue_work
                    |   &host->media_checker //use

Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Link: https://lore.kernel.org/r/20230307164338.1246287-1-zyytlz.wz@163.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-30 12:44:02 +01:00
arch ARM: 9296/1: HP Jornada 7XX: fix kernel-doc warnings 2023-05-30 12:44:01 +01:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:43:54 +01:00
certs
crypto crypto: drbg - Only fail when jent is unavailable in FIPS mode 2023-05-17 11:35:42 +02:00
Documentation media: uapi: add MEDIA_BUS_FMT_METADATA_FIXED media bus format. 2023-05-17 11:35:36 +02:00
drivers memstick: r592: Fix UAF bug in r592_remove due to race condition 2023-05-30 12:44:02 +01:00
fs fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode() 2023-05-30 12:44:02 +01:00
include net: add vlan_get_protocol_and_depth() helper 2023-05-30 12:44:01 +01:00
init
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel relayfs: fix out-of-bounds access in relay_file_read 2023-05-17 11:35:58 +02:00
lib linux/dim: Do nothing if no time delta between samples 2023-05-30 12:44:01 +01:00
LICENSES
mm mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock 2023-05-17 11:36:05 +02:00
net af_unix: Fix data races around sk->sk_shutdown. 2023-05-30 12:44:02 +01:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-18 11:41:26 +01:00
scripts scripts/gdb: fix lx-timerlist for Python3 2023-05-17 11:35:55 +02:00
security selinux: ensure av_permissions.h is built when needed 2023-05-17 11:35:34 +02:00
sound ALSA: caiaq: input: Add error handling for unsupported input methods in snd_usb_caiaq_input_init 2023-05-17 11:35:59 +02:00
tools perf symbols: Fix return incorrect build_id size in elf_read_build_id() 2023-05-17 11:36:00 +02:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS net/phy/mdio-i2c: Move header file to include/linux/mdio 2023-02-06 07:52:46 +01:00
Makefile Linux 5.4.243 2023-05-17 11:36:05 +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.