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Zheyu Ma 34914971bb can: peak_pci: peak_pci_remove(): fix UAF 
commit 949fe9b355 upstream.

When remove the module peek_pci, referencing 'chan' again after
releasing 'dev' will cause UAF.

Fix this by releasing 'dev' later.

The following log reveals it:

[   35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]
[   35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537
[   35.965513 ] Call Trace:
[   35.965718 ]  dump_stack_lvl+0xa8/0xd1
[   35.966028 ]  print_address_description+0x87/0x3b0
[   35.966420 ]  kasan_report+0x172/0x1c0
[   35.966725 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]
[   35.967137 ]  ? trace_irq_enable_rcuidle+0x10/0x170
[   35.967529 ]  ? peak_pci_remove+0x16f/0x270 [peak_pci]
[   35.967945 ]  __asan_report_load8_noabort+0x14/0x20
[   35.968346 ]  peak_pci_remove+0x16f/0x270 [peak_pci]
[   35.968752 ]  pci_device_remove+0xa9/0x250

Fixes: e6d9c80b7c ("can: peak_pci: add support of some new PEAK-System PCI cards")
Link: https://lore.kernel.org/all/1634192913-15639-1-git-send-email-zheyuma97@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-27 09:51:40 +02:00
arch NIOS2: irqflags: rename a redefined register name 2021-10-27 09:51:39 +02:00
block blk-throttle: fix UAF by deleteing timer in blk_throtl_exit() 2021-09-26 13:37:30 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-22 11:45:19 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-20 16:17:32 +02:00
Documentation dt-bindings: mtd: gpmc: Fix the ECC bytes vs. OOB bytes equation 2021-09-22 11:45:34 +02:00
drivers can: peak_pci: peak_pci_remove(): fix UAF 2021-10-27 09:51:40 +02:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:20:30 +01:00
fs NFSD: Keep existing listeners on portlist error 2021-10-27 09:51:39 +02:00
include sched: Always inline is_percpu_thread() 2021-10-17 10:08:34 +02:00
init pid: take a reference when initializing cad_pid 2021-06-10 12:43:51 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:17:07 +02:00
kernel bpf: Fix integer overflow in prealloc_elems_and_freelist() 2021-10-17 10:08:32 +02:00
lib bpf: add also cbpf long jump test cases with heavy expansion 2021-10-17 10:08:32 +02:00
mm mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range() 2021-09-22 11:45:34 +02:00
net netfilter: ipvs: make global sysctl readonly in non-init netns 2021-10-27 09:51:39 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-20 16:17:37 +02:00
scripts scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-15 13:03:31 +02:00
security apparmor: remove duplicate macro list_entry_is_head() 2021-09-26 13:37:28 +02:00
sound ALSA: seq: Fix a potential UAF by wrong private_free call order 2021-10-20 10:42:02 +02:00
tools usb: testusb: Fix for showing the connection speed 2021-10-09 14:09:46 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:34:19 +02:00
virt KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped() 2021-08-08 08:53:29 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
.mailmap .mailmap: Add Maciej W. Rozycki's Imagination e-mail address 2017-11-10 12:16:15 -08:00
COPYING
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 16:36:12 +01:00
Makefile Linux 4.14.252 2021-10-20 10:42:06 +02:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

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.