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Lv Yunlong 4fb44dd2c1 ALSA: sb: Fix two use after free in snd_sb_qsound_build
In snd_sb_qsound_build, snd_ctl_add(..,p->qsound_switch...) and
snd_ctl_add(..,p->qsound_space..) are called. But the second
arguments of snd_ctl_add() could be freed via snd_ctl_add_replace()
->snd_ctl_free_one(). After the error code is returned,
snd_sb_qsound_destroy(p) is called in __error branch.

But in snd_sb_qsound_destroy(), the freed p->qsound_switch and
p->qsound_space are still used by snd_ctl_remove().

My patch set p->qsound_switch and p->qsound_space to NULL if
snd_ctl_add() failed to avoid the uaf bugs. But these codes need
to further be improved with the code style.

Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210426145541.8070-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-04-26 18:01:07 +02:00
arch ARM SoC fixes for v5.12, part 2 2021-04-18 13:23:26 -07:00
block
certs
crypto
Documentation Merge remote-tracking branch 'asoc/for-5.13' into asoc-next 2021-04-23 19:01:02 +01:00
drivers Merge remote-tracking branch 'asoc/for-5.13' into asoc-next 2021-04-23 19:01:02 +01:00
fs readdir: make sure to verify directory entry for legacy interfaces too 2021-04-17 11:39:49 -07:00
include ASoC: Updates for v5.13 2021-04-26 16:59:21 +02:00
init
ipc
kernel Networking fixes for 5.12-rc8, including fixes from netfilter, 2021-04-17 09:57:15 -07:00
lib lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
LICENSES
mm mm: ptdump: fix build failure 2021-04-16 16:10:37 -07:00
net netlink: don't call ->netlink_bind with table lock held 2021-04-16 17:01:04 -07:00
samples
scripts kasan: remove redundant config option 2021-04-16 16:10:36 -07:00
security kasan: remove redundant config option 2021-04-16 16:10:36 -07:00
sound ALSA: sb: Fix two use after free in snd_sb_qsound_build 2021-04-26 18:01:07 +02:00
tools Networking fixes for 5.12-rc8, including fixes from netfilter, 2021-04-17 09:57:15 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS ASoC: Updates for v5.13 2021-04-26 16:59:21 +02:00
Makefile Linux 5.12-rc8 2021-04-18 14:45:32 -07:00
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.