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Filename Latest commit message Latest commit date
Xuan Zhuo 7c1019391b virtio_net: bugfix overflow inside xdp_linearize_page() 
[ Upstream commit 853618d5886bf94812f31228091cd37d308230f7 ]

Here we copy the data from the original buf to the new page. But we
not check that it may be overflow.

As long as the size received(including vnethdr) is greater than 3840
(PAGE_SIZE -VIRTIO_XDP_HEADROOM). Then the memcpy will overflow.

And this is completely possible, as long as the MTU is large, such
as 4096. In our test environment, this will cause crash. Since crash is
caused by the written memory, it is meaningless, so I do not include it.

Fixes: 72979a6c35 ("virtio_net: xdp, add slowpath case for non contiguous buffers")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-04-26 11:24:02 +02:00
arch arm64: dts: meson-g12-common: specify full DMC range 2023-04-26 11:24:01 +02:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:43:54 +01:00
certs
crypto asymmetric_keys: log on fatal failures in PE/pkcs7 2023-04-20 12:07:36 +02:00
Documentation ALSA: hda/sigmatel: add pin overrides for Intel DP45SG motherboard 2023-04-20 12:07:35 +02:00
drivers virtio_net: bugfix overflow inside xdp_linearize_page() 2023-04-26 11:24:02 +02:00
fs xfs: force log and push AIL to clear pinned inodes when aborting mount 2023-04-20 12:07:38 +02:00
include netfilter: br_netfilter: fix recent physdev match breakage 2023-04-26 11:24:01 +02:00
init
ipc
kernel irqdomain: Fix mapping-creation race 2023-04-20 12:07:35 +02:00
lib
LICENSES
mm mm/swap: fix swap_info_struct race between swapoff and get_swap_pages() 2023-04-20 12:07:35 +02:00
net net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg 2023-04-26 11:24:01 +02:00
samples
scripts
security keys: Do not cache key in task struct if key is requested from kernel thread 2023-04-05 11:16:37 +02:00
sound ALSA: hda/sigmatel: fix S/PDIF out on Intel D*45* motherboards 2023-04-20 12:07:35 +02:00
tools selftests/bpf: check that modifier resolves after pointer 2023-04-05 11:16:39 +02:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
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Makefile Linux 5.4.241 2023-04-20 12:07:38 +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.