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Filename Latest commit message Latest commit date
Florian Westphal 4e66422f1b netfilter: nf_tables: reject QUEUE/DROP verdict parameters 
commit f342de4e2f33e0e39165d8639387aa6c19dff660 upstream.

This reverts commit e0abdadcc6.

core.c:nf_hook_slow assumes that the upper 16 bits of NF_DROP
verdicts contain a valid errno, i.e. -EPERM, -EHOSTUNREACH or similar,
or 0.

Due to the reverted commit, its possible to provide a positive
value, e.g. NF_ACCEPT (1), which results in use-after-free.

Its not clear to me why this commit was made.

NF_QUEUE is not used by nftables; "queue" rules in nftables
will result in use of "nft_queue" expression.

If we later need to allow specifiying errno values from userspace
(do not know why), this has to call NF_DROP_GETERR and check that
"err <= 0" holds true.

Fixes: e0abdadcc6 ("netfilter: nf_tables: accept QUEUE/DROP verdict parameters")
Cc: stable@vger.kernel.org
Reported-by: Notselwyn <notselwyn@pwning.tech>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 08:24:52 +01:00
arch x86/CPU/AMD: Fix disabling XSAVES on AMD family 0x17 due to erratum 2024-02-23 08:24:50 +01:00
block block: Remove special-casing of compound pages 2024-02-23 08:24:49 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: api - Disallow identical driver names 2024-02-23 08:24:48 +01:00
Documentation rename(): fix the locking of subdirectories 2024-02-23 08:24:49 +01:00
drivers rbd: don't move requests to the running list on errors 2024-02-23 08:24:52 +01:00
fs btrfs: defrag: reject unknown flags of btrfs_ioctl_defrag_range_args 2024-02-23 08:24:52 +01:00
include btrfs: defrag: reject unknown flags of btrfs_ioctl_defrag_range_args 2024-02-23 08:24:52 +01:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:34:30 -08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel tracing: Ensure visibility when inserting an element into tracing_map 2024-02-23 08:24:50 +01:00
lib ida: Fix crash in ida_free when the bitmap is empty 2024-01-25 14:34:21 -08:00
LICENSES
mm mm: fix unmap_mapping_range high bits shift bug 2024-01-15 18:25:28 +01:00
net netfilter: nf_tables: reject QUEUE/DROP verdict parameters 2024-02-23 08:24:52 +01:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-07-27 08:37:07 +02:00
scripts sign-file: Fix incorrect return values check 2023-12-20 15:41:17 +01:00
security apparmor: avoid crash when parsed profile name is empty 2024-01-25 14:34:31 -08:00
sound ALSA: oxygen: Fix right channel of capture volume mixer 2024-01-25 14:34:30 -08:00
tools perf top: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set 2024-01-25 14:34:33 -08:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-30 16:27:12 +02:00
Makefile Linux 5.4.268 2024-01-25 14:34:33 -08:00
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.