Release Date: | 2019-12-08 |
In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
See more information about CVE-2019-19448 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
Base Score: | 7.8 | Base Metrics: | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Access Vector: | Local network | Attack Complexity: | Low |
Privileges Required: | None | User Interaction: | Required |
Scope: | Unchanged | Confidentiality Impact: | High |
Integrity Impact: | High | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 6 (kernel-uek) | ELSA-2021-9459 | 2021-09-22 |
Oracle Linux version 7 (kernel-uek) | ELSA-2020-5913 | 2020-11-10 |
Oracle Linux version 7 (kernel-uek) | ELSA-2021-9459 | 2021-09-22 |
Oracle VM version 3 (kernel-uek) | OVMSA-2021-0031 | 2021-09-22 |
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