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Krishna chaitanya chundru 94991728c8 bus: mhi: host: Add alignment check for event ring read pointer
[ Upstream commit eff9704f53 ]

Though we do check the event ring read pointer by "is_valid_ring_ptr"
to make sure it is in the buffer range, but there is another risk the
pointer may be not aligned.  Since we are expecting event ring elements
are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer
could lead to multiple issues like DoS or ring buffer memory corruption.

So add a alignment check for event ring read pointer.

Fixes: ec32332df7 ("bus: mhi: core: Sanity check values from remote device before use")
cc: stable@vger.kernel.org
Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20231031-alignment_check-v2-1-1441db7c5efd@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-23 08:54:33 +01:00
arch arm64: dts: qcom: sdm845: fix USB DP/DM HS PHY interrupts 2024-02-23 08:54:25 +01:00
block block: Remove special-casing of compound pages 2024-01-25 14:52:55 -08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto crypto: api - Disallow identical driver names 2024-02-23 08:54:23 +01:00
Documentation rename(): fix the locking of subdirectories 2024-02-23 08:54:26 +01:00
drivers bus: mhi: host: Add alignment check for event ring read pointer 2024-02-23 08:54:33 +01:00
fs xfs: read only mounts with fsopen mount API are busted 2024-02-23 08:54:32 +01:00
include btrfs: defrag: reject unknown flags of btrfs_ioctl_defrag_range_args 2024-02-23 08:54:31 +01:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:52:48 -08:00
io_uring io_uring/rw: ensure io->bytes_done is always initialized 2024-01-25 14:52:48 -08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:28:45 +01:00
kernel tracing: Ensure visibility when inserting an element into tracing_map 2024-02-23 08:54:28 +01:00
lib kunit: debugfs: Fix unchecked dereference in debugfs_print_results() 2024-01-25 14:52:34 -08:00
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mm mm: fix unmap_mapping_range high bits shift bug 2024-01-15 18:51:23 +01:00
net netfilter: nf_tables: reject QUEUE/DROP verdict parameters 2024-02-23 08:54:32 +01:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:10:01 +02:00
scripts scripts/get_abi: fix source path leak 2024-02-23 08:54:25 +01:00
security lsm: new security_file_ioctl_compat() hook 2024-02-23 08:54:25 +01:00
sound ALSA: hda/relatek: Enable Mute LED on HP Laptop 15s-fq2xxx 2024-01-25 14:52:48 -08:00
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Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
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README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.