kernel: userfaultfd bypasses tmpfs file permissions
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | n/a | affected |
|
Configuration 1 [-]
|
Configuration 2 [-]
|
Configuration 3 [-]
|
| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | |||
| kernel-0:3.10.0-957.5.1.el7 | cpe:/o:redhat:enterprise_linux:7 | RHSA-2019:0163 | 2019-01-29T00:00:00Z |
| kernel-alt-0:4.14.0-115.7.1.el7a | cpe:/o:redhat:enterprise_linux:7 | RHSA-2019:0831 | 2019-04-23T00:00:00Z |
| Red Hat Enterprise Linux 7.4 Extended Update Support | |||
| kernel-0:3.10.0-693.44.1.el7 | cpe:/o:redhat:rhel_eus:7.4 | RHSA-2019:0324 | 2019-02-12T00:00:00Z |
| Red Hat Enterprise Linux 7.5 Extended Update Support | |||
| kernel-0:3.10.0-862.27.1.el7 | cpe:/o:redhat:rhel_eus:7.5 | RHSA-2019:0202 | 2019-01-29T00:00:00Z |
No data available yet.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2018-10126 | 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. |
Ubuntu USN |
USN-3901-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-3901-2 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-3903-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-3903-2 | Linux kernel (HWE) vulnerabilities |
No CVSS v4.0
No CVSS v3.1
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.510% probability within 30 days)
Key SSVC decision points have not yet been added.
No history.