CVE-2018-18397
- State
- Published
- Severity
- Not scored
- Published
- Dec 12, 2018
- Updated
- Aug 5, 2024
- Reserved
- Oct 16, 2018
Description
The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- USN-3903-2vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87
- https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1
- USN-3901-2vendor-advisory
- RHSA-2019:0324vendor-advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1700
- RHSA-2019:0202vendor-advisory
- RHSA-2019:0163vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7
- USN-3901-1vendor-advisory
- USN-3903-1vendor-advisory
- RHSA-2019:0831vendor-advisory
- RHBA-2019:0327vendor-advisory
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