- Description
- 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.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Awaiting Analysis
CVSS 3.1
- Type
- Secondary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
- CWE-416
- Hype score
- Not currently trending
CVE-2024-53143 Use-After-Free Vulnerability Patched in Linux Kernel's fsnotify In the Linux kernel, a vulnerability was fixed. The issue involved the order of operations in fsnotify. They needed to make sure the ... https://t.co/dOj28PbvKB
@VulmonFeeds
7 Dec 2024
63 Impressions
1 Retweet
1 Like
1 Bookmark
0 Replies
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CVE-2024-53143 In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix ordering of iput() and watched_objects decrement Ensure the superblock is kept ali… https://t.co/ydvihgQDcs
@CVEnew
7 Dec 2024
500 Impressions
1 Retweet
1 Like
1 Bookmark
0 Replies
0 Quotes