Описание
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix undefined behavior in bit shift for ext4_check_flag_values
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 fs/ext4/ext4.h:591:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c ext4_init_fs+0x5a/0x277 do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix undefined behavior in bit shift for ext4_check_flag_values
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 fs/ext4/ext4.h:591:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c ext4_init_fs+0x5a/0x277 do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2022-50403
- https://git.kernel.org/stable/c/205ac16628aca9093931fcbdb4bcd00d0eb94132
- https://git.kernel.org/stable/c/3bf678a0f9c017c9ba7c581541dbc8453452a7ae
- https://git.kernel.org/stable/c/4690a4bdcf1470cb161aff1be30bd143b9dffd89
- https://git.kernel.org/stable/c/5da9e607547f73dc7a643f35b0487992fd66910f
- https://git.kernel.org/stable/c/743e9d708743d98464ccbd56e820d87dc6d1d629
- https://git.kernel.org/stable/c/7753d6657873a2523a9989e6c09090cd503bbcda
- https://git.kernel.org/stable/c/d7f93fc6fba8ff017be871be7edf8614a785ccad
- https://git.kernel.org/stable/c/dd5639d36a5e4e42fd0fe05cc0b2ad9ddd3fca9d
- https://git.kernel.org/stable/c/f9cd6980800bbfd11bf94eb5f942049d4d4eaa52
CVE ID
Связанные уязвимости
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.