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Helge Deller 665df39ab2 fbcon: Fix boundary checks for fbcon=vc:n1-n2 parameters 
commit cad564ca55 upstream.

The user may use the fbcon=vc:<n1>-<n2> option to tell fbcon to take
over the given range (n1...n2) of consoles. The value for n1 and n2
needs to be a positive number and up to (MAX_NR_CONSOLES - 1).
The given values were not fully checked against those boundaries yet.

To fix the issue, convert first_fb_vc and last_fb_vc to unsigned
integers and check them against the upper boundary, and make sure that
first_fb_vc is smaller than last_fb_vc.

Cc: stable@vger.kernel.org # v4.19+
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YpkYRMojilrtZIgM@p100
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 14:40:08 +02:00
arch KVM: x86: revalidate steal time cache if MSR value changes 2022-08-17 14:40:07 +02:00
block block: fix default IO priority handling again 2022-08-11 13:20:39 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:28:03 +02:00
crypto crypto: memneq - move into lib/ 2022-06-22 14:28:06 +02:00
Documentation x86/speculation: Add RSB VM Exit protections 2022-08-11 13:20:44 +02:00
drivers fbcon: Fix boundary checks for fbcon=vc:n1-n2 parameters 2022-08-17 14:40:08 +02:00
fs fs: Add missing umask strip in vfs_tmpfile 2022-08-17 14:40:08 +02:00
include KVM: Fully serialize gfn=>pfn cache refresh via mutex 2022-08-17 14:40:05 +02:00
init gcc-12: disable '-Warray-bounds' universally for now 2022-06-22 14:27:55 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:30:30 +02:00
kernel entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set 2022-08-11 13:20:41 +02:00
lib ida: don't use BUG_ON() for debugging 2022-07-12 16:42:25 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm page_alloc: fix invalid watermark check on a negative value 2022-08-03 12:05:28 +02:00
net tcp: Fix data-races around sysctl_tcp_workaround_signed_windows. 2022-08-03 12:05:29 +02:00
samples samples/landlock: Format with clang-format 2022-06-09 10:30:46 +02:00
scripts x86/retbleed: Add fine grained Kconfig knobs 2022-07-23 12:56:56 +02:00
security lockdown: Fix kexec lockdown bypass with ima policy 2022-07-29 17:27:55 +02:00
sound ALSA: hda/realtek: Add a quirk for HP OMEN 15 (8786) mute LED 2022-08-17 14:40:07 +02:00
tools x86/speculation: Add RSB VM Exit protections 2022-08-11 13:20:44 +02:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt KVM: Do not incorporate page offset into gfn=>pfn cache user address 2022-08-17 14:40:06 +02:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Remove iommu@lists.linux-foundation.org 2022-07-12 16:42:15 +02:00
Makefile Makefile: link with -z noexecstack --no-warn-rwx-segments 2022-08-17 14:40:01 +02:00
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.