In the Linux kernel, the following vulnerability has been resolved:
ext4: fix possible UAF when remounting r/o a mmp-protected file system
After commit 618f003199c6 ("ext4: fix memory leak in
ext4_fill_super"), after the file system is remounted read-only, there
is a race where the kmmpd thread can exit, causing sbi->s_mmp_tsk to
point at freed memory, which the call to ext4_stop_mmpd() can trip
over.
Fix this by only allowing kmmpd() to exit when it is stopped via
ext4_stop_mmpd().
Bug-Report-Link: <20210629143603.2166962-1-yebin10@huawei.com>
Metrics
Affected Vendors & Products
References
History
Thu, 26 Dec 2024 19:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Linux
Linux linux Kernel |
|
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
|
Metrics |
cvssV3_1
|
cvssV3_1
|

Status: PUBLISHED
Assigner: Linux
Published: 2024-05-21T14:35:49.643Z
Updated: 2024-12-19T07:40:05.470Z
Reserved: 2024-05-21T14:28:16.979Z
Link: CVE-2021-47342

Updated: 2024-08-04T05:32:08.518Z

Status : Analyzed
Published: 2024-05-21T15:15:20.923
Modified: 2024-12-26T19:29:20.557
Link: CVE-2021-47342
