In the Linux kernel, the following vulnerability has been resolved:
fsnotify: Fix ordering of iput() and watched_objects decrement
Ensure the superblock is kept alive until we're done with iput().
Holding a reference to an inode is not allowed unless we ensure the
superblock stays alive, which fsnotify does by keeping the
watched_objects count elevated, so iput() must happen before the
watched_objects decrement.
This can lead to a UAF of something like sb->s_fs_info in tmpfs, but the
UAF is hard to hit because race orderings that oops are more likely, thanks
to the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().
Also, ensure that fsnotify_put_sb_watched_objects() doesn't call
fsnotify_sb_watched_objects() on a superblock that may have already been
freed, which would cause a UAF read of sb->s_fsnotify_info.
CVSS
No CVSS.
References
Configurations
Configuration 1 (hide)
|
History
24 Mar 2025, 17:27
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://project-zero.issues.chromium.org/issues/379667898 - Patch | |
| References | () https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a - Patch | |
| References | () https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a - Patch | |
| References | () https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434 - Patch |
11 Jan 2025, 13:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
07 Dec 2024, 07:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-12-07 07:15
Updated : 2025-03-24 17:27
NVD link : CVE-2024-53143
Mitre link : CVE-2024-53143
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.