linux-bredos

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Tetsuo Handa fe1c021eb0 tomoyo: don't emit warning in tomoyo_write_control()

[ Upstream commit 3df7546fc0 ]

syzbot is reporting too large allocation warning at tomoyo_write_control(),
for one can write a very very long line without new line character. To fix
this warning, I use __GFP_NOWARN rather than checking for KMALLOC_MAX_SIZE,
for practically a valid line should be always shorter than 32KB where the
"too small to fail" memory-allocation rule applies.

One might try to write a valid line that is longer than 32KB, but such
request will likely fail with -ENOMEM. Therefore, I feel that separately
returning -EINVAL when a line is longer than KMALLOC_MAX_SIZE is redundant.
There is no need to distinguish over-32KB and over-KMALLOC_MAX_SIZE.

Reported-by: syzbot+7536f77535e5210a5c76@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=7536f77535e5210a5c76
Reported-by: Leo Stone <leocstone@gmail.com>
Closes: https://lkml.kernel.org/r/20241216021459.178759-2-leocstone@gmail.com
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-02-17 09:40:07 +01:00

apparmor

apparmor: test: Fix memory leak for aa_unpack_strdup()

2024-12-09 10:32:45 +01:00

bpf

bpf: lsm: Set bpf_lsm_blob_sizes.lbs_task to 0

2024-10-04 16:30:02 +02:00

integrity

ima: fix buffer overrun in ima_eventdigest_init_common

2024-11-22 15:38:34 +01:00

keys

security/keys: fix slab-out-of-bounds in key_task_permission