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Loris Reiff 00af2d59a0 bpf, cgroup: Fix problematic bounds check 
[ Upstream commit f4a2da755a7e1f5d845c52aee71336cee289935a ]

Since ctx.optlen is signed, a larger value than max_value could be
passed, as it is later on used as unsigned, which causes a WARN_ON_ONCE
in the copy_to_user.

Fixes: 0d01da6afc54 ("bpf: implement getsockopt and setsockopt hooks")
Signed-off-by: Loris Reiff <loris.reiff@liblor.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20210122164232.61770-2-loris.reiff@liblor.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-04-12 12:51:52 +08:00
Documentation KVM: Forbid the use of tagged userspace addresses for memslots 2021-04-12 12:51:44 +08:00
LICENSES Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arch arm64: dts: rockchip: fix vopl iommu irq on px30 2021-04-12 12:51:52 +08:00
block Revert "Revert "block: end bio with BLK_STS_AGAIN in case of non-mq devs and REQ_NOWAIT"" 2021-04-12 12:51:49 +08:00
certs Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: asym_tpm: correct zero out potential secrets 2021-04-12 12:51:10 +08:00
drivers Input: i8042 - unbreak Pegatron C15B 2021-04-12 12:51:52 +08:00
fs udf: fix the problem that the disc content is not displayed 2021-04-12 12:51:51 +08:00
include kthread: Extract KTHREAD_IS_PER_CPU 2021-04-12 12:51:51 +08:00
init exec: Transform exec_update_mutex into a rw_semaphore 2021-04-12 12:51:05 +08:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2021-03-16 16:27:51 +08:00
kernel bpf, cgroup: Fix problematic bounds check 2021-04-12 12:51:52 +08:00
lib lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-04-12 12:51:24 +08:00
mm Revert "mm/slub: fix a memory leak in sysfs_slab_add()" 2021-04-12 12:51:40 +08:00
net mac80211: fix fast-rx encryption check 2021-04-12 12:51:50 +08:00
package generate-rpms: modify the name of the kernel tag for x86 and arm64 2021-04-07 06:53:59 +00:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2021-03-16 16:42:53 +08:00
scripts depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-04-12 12:51:06 +08:00
security dump_common_audit_data(): fix racy accesses to ->d_name 2021-04-12 12:51:25 +08:00
sound ALSA: hda: Add Cometlake-R PCI ID 2021-04-12 12:51:51 +08:00
tools objtool: Don't fail on missing symbol table 2021-04-12 12:51:51 +08:00
usr Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
virt KVM: Forbid the use of tagged userspace addresses for memslots 2021-04-12 12:51:44 +08:00
.clang-format Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.cocciconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.get_maintainer.ignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitattributes Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
COPYING Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
CREDITS Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kbuild Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2021-03-16 16:34:24 +08:00
Makefile kbuild: enforce -Werror=return-type 2021-04-12 12:51:21 +08:00
README Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
README.md Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
backport_remove_lists.txt Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tools_key.pub Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00

README.md

Tencent Linux Kernel 4.0