CVE-2021-33909
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- CVE-2021-33909
CVE Details
| Release Date: | 2021-07-20 | |
| Impact: | None | What is this? |
Description
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
See more information about CVE-2021-33909 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 7.8 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 6 (kernel) | ELSA-2021-9374 | 2021-07-26 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9369 | 2021-07-22 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2021-9395 | 2021-08-04 |
| Oracle Linux version 7 (kernel) | ELSA-2021-2725 | 2021-07-21 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9368 | 2021-07-22 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9369 | 2021-07-22 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9371 | 2021-07-22 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9395 | 2021-08-04 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9404 | 2021-08-10 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9407 | 2021-08-11 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9370 | 2021-07-22 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9372 | 2021-07-22 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9406 | 2021-08-10 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9410 | 2021-08-10 |
| Oracle Linux version 8 (kernel) | ELSA-2021-2714 | 2021-07-21 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9371 | 2021-07-22 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9404 | 2021-08-10 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9372 | 2021-07-22 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9406 | 2021-08-10 |
| Oracle VM version 3 (kernel-uek) | OVMSA-2021-0023 | 2021-07-22 |
| Oracle VM version 3 (kernel-uek) | OVMSA-2021-0025 | 2021-08-04 |
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