Revision d81916910f7498fe7a768697e0101d488f9fe665 authored by Yang Yingliang on 29 October 2022, 08:29:31 UTC, committed by Huacai Chen on 29 October 2022, 08:29:31 UTC
Currently the return value of 'sub_driver->init' is not checked. If sparse_keymap_setup() called in the init function fails, 'generic_ inputdev' is freed, then it will lead a UAF when using it in generic_ acpi_laptop_init(). Fix it by checking the return value and setting generic_inputdev to NULL after free, so as to avoid double free it. The error code in generic_subdriver_init() is always negative, so the return of generic_subdriver_init() can be simplified. Fixes: 6246ed09111f ("LoongArch: Add ACPI-based generic laptop driver") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
1 parent fbe605a
depmod.sh
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# A depmod wrapper used by the toplevel Makefile
if test $# -ne 2; then
echo "Usage: $0 /sbin/depmod <kernelrelease>" >&2
exit 1
fi
DEPMOD=$1
KERNELRELEASE=$2
if ! test -r System.map ; then
echo "Warning: modules_install: missing 'System.map' file. Skipping depmod." >&2
exit 0
fi
# legacy behavior: "depmod" in /sbin, no /sbin in PATH
PATH="$PATH:/sbin"
if [ -z $(command -v $DEPMOD) ]; then
echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
echo "This is probably in the kmod package." >&2
exit 0
fi
# older versions of depmod require the version string to start with three
# numbers, so we cheat with a symlink here
depmod_hack_needed=true
tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
-e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
depmod_hack_needed=false
fi
fi
rm -rf "$tmp_dir"
if $depmod_hack_needed; then
symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
ln -s "$KERNELRELEASE" "$symlink"
KERNELRELEASE=99.98.$KERNELRELEASE
fi
set -- -ae -F System.map
if test -n "$INSTALL_MOD_PATH"; then
set -- "$@" -b "$INSTALL_MOD_PATH"
fi
"$DEPMOD" "$@" "$KERNELRELEASE"
ret=$?
if $depmod_hack_needed; then
rm -f "$symlink"
fi
exit $ret
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