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Filename Latest commit message Latest commit date
Dmitry Torokhov 597ff93029 Input: uinput - reject requests with unreasonable number of slots
[ Upstream commit 206f533a0a7c683982af473079c4111f4a0f9f5e ]

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

When exercising uinput interface syzkaller may try setting up device
with a really large number of slots, which causes memory allocation
failure in input_mt_init_slots(). While this allocation failure is
handled properly and request is rejected, it results in syzkaller
reports. Additionally, such request may put undue burden on the
system which will try to free a lot of memory for a bogus request.

Fix it by limiting allowed number of slots to 100. This can easily
be extended if we see devices that can track more than 100 contacts.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+0122fa359a69694395d5@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=0122fa359a69694395d5
Link: https://lore.kernel.org/r/Zqgi7NYEbpRsJfa2@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-09-12 11:03:55 +02:00
arch um: line: always fill *error_out in setup_one_line() 2024-09-12 11:03:53 +02:00
block block: initialize integrity buffer to zero before writing it to media 2024-09-12 11:03:50 +02:00
certs
crypto crypto: ecrdsa - Fix module auto-load on add_key 2024-06-16 13:28:51 +02:00
Documentation overflow: Implement size_t saturating arithmetic helpers 2024-09-04 13:14:51 +02:00
drivers Input: uinput - reject requests with unreasonable number of slots 2024-09-12 11:03:55 +02:00
fs btrfs: initialize location to fix -Wmaybe-uninitialized in btrfs_lookup_dentry() 2024-09-12 11:03:54 +02:00
include i2c: Use IS_REACHABLE() for substituting empty ACPI functions 2024-09-12 11:03:50 +02:00
init init: open /initrd.image with O_LARGEFILE 2024-04-13 12:51:36 +02:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu() 2024-09-12 11:03:54 +02:00
lib overflow: Implement size_t saturating arithmetic helpers 2024-09-04 13:14:51 +02:00
LICENSES
mm memcg_write_event_control(): fix a user-triggerable oops 2024-09-04 13:14:50 +02:00
net net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN 2024-09-12 11:03:53 +02:00
samples media: rename VFL_TYPE_GRABBER to _VIDEO 2024-03-26 18:22:22 -04:00
scripts kbuild: Fix '-S -c' in x86 stack protector scripts 2024-08-19 05:33:53 +02:00
security smack: unix sockets: fix accept()ed socket label 2024-09-12 11:03:52 +02:00
sound ASoC: topology: Properly initialize soc_enum values 2024-09-12 11:03:53 +02:00
tools libbpf: Add NULL checks to bpf_object__{prev_map,next_map} 2024-09-12 11:03:54 +02:00
usr
virt KVM: async_pf: Cleanup kvm_setup_async_pf() 2024-05-02 16:18:32 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
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Kconfig
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Makefile Linux 5.4.283 2024-09-04 13:15:05 +02:00
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Linux kernel
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There are various text files in the Documentation/ subdirectory,
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