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Badhri Jagan Sridharan ff466f77d0 usb: typec: altmodes/displayport: fix pin_assignment_show 
commit d8f28269dd upstream.

This patch fixes negative indexing of buf array in pin_assignment_show
when get_current_pin_assignments returns 0 i.e. no compatible pin
assignments are found.

BUG: KASAN: use-after-free in pin_assignment_show+0x26c/0x33c
...
Call trace:
dump_backtrace+0x110/0x204
dump_stack_lvl+0x84/0xbc
print_report+0x358/0x974
kasan_report+0x9c/0xfc
__do_kernel_fault+0xd4/0x2d4
do_bad_area+0x48/0x168
do_tag_check_fault+0x24/0x38
do_mem_abort+0x6c/0x14c
el1_abort+0x44/0x68
el1h_64_sync_handler+0x64/0xa4
el1h_64_sync+0x78/0x7c
pin_assignment_show+0x26c/0x33c
dev_attr_show+0x50/0xc0

Fixes: 0e3bb7d689 ("usb: typec: Add driver for DisplayPort alternate mode")
Cc: stable@vger.kernel.org
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230508214443.893436-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-30 12:57:54 +01:00
arch arm64: dts: qcom: msm8996: Add missing DWC3 quirks 2023-05-30 12:57:47 +01:00
block blk-crypto: make blk_crypto_evict_key() more robust 2023-05-17 11:47:32 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: drbg - Only fail when jent is unavailable in FIPS mode 2023-05-17 11:47:50 +02:00
Documentation docs: futex: Fix kernel-doc references after code split-up preparation 2023-04-26 11:27:40 +02:00
drivers usb: typec: altmodes/displayport: fix pin_assignment_show 2023-05-30 12:57:54 +01:00
fs btrfs: fix space cache inconsistency after error loading it from disk 2023-05-30 12:57:51 +01:00
include net: Find dst with sk's xfrm policy not ctl_sk 2023-05-30 12:57:52 +01:00
init kbuild: check the minimum assembler version in Kconfig 2023-04-20 12:10:28 +02:00
io_uring io_uring: avoid null-ptr-deref in io_arm_poll_handler 2023-03-22 13:30:05 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel bpf: Annotate data races in bpf_local_storage 2023-05-30 12:57:48 +01:00
lib lib: cpu_rmap: Avoid use after free on rmap->obj array entries 2023-05-30 12:57:49 +01:00
LICENSES
mm mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock 2023-05-17 11:48:19 +02:00
net bridge: always declare tunnel functions 2023-05-30 12:57:53 +01:00
samples samples/bpf: Fix fout leak in hbm's run_bpf_prog 2023-05-30 12:57:49 +01:00
scripts recordmcount: Fix memory leaks in the uwrite function 2023-05-30 12:57:50 +01:00
security selinux: ensure av_permissions.h is built when needed 2023-05-17 11:47:37 +02:00
sound ALSA: usb-audio: Add a sample rate workaround for Line6 Pod Go 2023-05-30 12:57:53 +01:00
tools cpupower: Make TSC read per CPU for Mperf monitor 2023-05-30 12:57:51 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS audit: update the mailing list in MAINTAINERS 2023-02-25 11:55:04 +01:00
Makefile Linux 5.10.180 2023-05-17 11:48:20 +02:00
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.