Files
msm-5.15/include/uapi/linux
Gaosheng Cui 151dc8087b capabilities: fix undefined behavior in bit shift for CAP_TO_MASK
[ Upstream commit 46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13 ]

Shifting signed 32-bit value by 31 bits is undefined, so changing
significant bit to unsigned. The UBSAN warning calltrace like below:

UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2
left shift of 1 by 31 places cannot be represented in type 'int'
Call Trace:
 <TASK>
 dump_stack_lvl+0x7d/0xa5
 dump_stack+0x15/0x1b
 ubsan_epilogue+0xe/0x4e
 __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c
 cap_task_prctl+0x561/0x6f0
 security_task_prctl+0x5a/0xb0
 __x64_sys_prctl+0x61/0x8f0
 do_syscall_64+0x58/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
 </TASK>

Fixes: e338d263a7 ("Add 64-bit capability support to the kernel")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Acked-by: Andrew G. Morgan <morgan@kernel.org>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-11-16 09:58:17 +01:00
..
2021-09-14 08:46:08 +02:00
2021-01-25 18:44:44 +01:00
2020-05-28 11:22:14 +02:00
2021-08-17 11:47:53 -04:00
2020-12-28 14:21:31 +00:00
2021-02-09 10:58:19 +01:00
2021-06-10 20:59:05 -04:00
2020-08-12 10:58:00 -07:00
2020-10-09 12:47:02 -06:00
2021-03-04 17:58:15 -08:00
2021-08-23 13:19:09 +02:00
2021-08-10 13:32:40 -04:00
2020-07-19 19:20:22 -07:00
2020-06-24 21:34:11 +02:00
2020-05-14 16:44:25 +02:00
2021-02-08 13:01:24 +01:00
2021-10-06 12:05:51 +00:00
2021-06-03 15:31:34 -07:00
2020-07-13 15:32:56 -07:00
2021-02-26 09:41:03 -08:00
2021-05-21 15:03:50 +02:00
2020-05-21 08:20:35 -06:00
2021-03-10 09:34:06 +01:00
2020-08-18 15:44:44 +02:00
2021-07-06 10:37:46 -05:00
2021-01-16 23:19:26 +01:00
2021-03-10 09:34:06 +01:00
2021-06-23 12:56:08 -07:00
2021-01-07 16:17:32 +01:00
2020-10-23 11:55:28 -04:00
2020-10-23 11:55:28 -04:00
2021-06-12 13:16:45 -07:00
2020-07-13 15:32:56 -07:00