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Phil Sutter 25fb2d77d8 net: skb_find_text: Ignore patterns extending past 'to' 
[ Upstream commit c4eee56e14 ]

Assume that caller's 'to' offset really represents an upper boundary for
the pattern search, so patterns extending past this offset are to be
rejected.

The old behaviour also was kind of inconsistent when it comes to
fragmentation (or otherwise non-linear skbs): If the pattern started in
between 'to' and 'from' offsets but extended to the next fragment, it
was not found if 'to' offset was still within the current fragment.

Test the new behaviour in a kselftest using iptables' string match.

Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Fixes: f72b948dcb ("[NET]: skb_find_text ignores to argument")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:56:51 +01:00
arch bpf, x64: Fix tailcall infinite loop 2023-11-20 11:56:46 +01:00
block blk-throttle: check for overflow in calculate_bytes_allowed 2023-11-02 09:36:56 +01:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto KEYS: asymmetric: Fix sign/verify on pkcs1pad without a hash 2023-10-25 12:16:27 +02:00
Documentation x86/srso: Fix vulnerability reporting for missing microcode 2023-11-20 11:56:43 +01:00
drivers thermal/drivers/mediatek: Fix probe for THERMAL_V2 2023-11-20 11:56:51 +01:00
fs pstore/platform: Add check for kstrdup 2023-11-20 11:56:44 +01:00
include PM: sleep: Fix symbol export for _SIMPLE_ variants of _PM_OPS() 2023-11-20 11:56:48 +01:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:52:59 +02:00
io_uring io_uring: kiocb_done() should *not* trust ->ki_pos if ->{read,write}_iter() failed 2023-11-08 14:09:03 +01:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel bpf: Fix missed rcu read lock in bpf_task_under_cgroup() 2023-11-20 11:56:51 +01:00
lib maple_tree: add GFP_KERNEL to allocations in mas_expected_entries() 2023-11-02 09:36:48 +01:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm vfs: fix readahead(2) on block devices 2023-11-20 11:56:43 +01:00
net net: skb_find_text: Ignore patterns extending past 'to' 2023-11-20 11:56:51 +01:00
rust rust: types: make Opaque be !Unpin 2023-11-08 14:09:04 +01:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:14:33 +02:00
scripts x86/srso: Fix unret validation dependencies 2023-11-20 11:56:43 +01:00
security KEYS: trusted: Remove redundant static calls usage 2023-10-19 23:10:57 +02:00
sound ASoC: SOF: sof-pci-dev: Fix community key quirk detection 2023-11-08 14:09:07 +01:00
tools net: skb_find_text: Ignore patterns extending past 'to' 2023-11-20 11:56:51 +01:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:53:29 +02:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Revert ".gitignore: ignore *.cover and *.mbx" 2023-07-04 15:05:12 -07:00
.mailmap mailmap: add entries for Simon Horman 2023-08-16 09:53:10 +01:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS sound fixes for 6.5 2023-08-25 08:48:14 -07:00
Makefile Linux 6.5.11 2023-11-08 14:09:07 +01:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.