Updated: 2026-02-27 01:34:38.659271
Description:
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 4.9 |
| CVSS Version 3.x | MEDIUM | 6.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CentOS 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Not Vulnerable | 2021-11-02 14:03:27 | Not affected: CVE-2021-28038 is specific to Linux systems acting as a Xen paravirtualized network ba... | |
| CentOS 7 ELS | kernel | 3.10.0 | 6.5 | MEDIUM | Ignored | 2023-09-19 09:30:11 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 6.5 | MEDIUM | Ignored | 2023-08-23 03:49:30 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 6.5 | MEDIUM | Ignored | 2023-08-23 03:49:30 | Ignored due to low severity | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Ignored | 2022-01-27 11:20:16 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Not Vulnerable | 2022-11-30 10:09:57 | Not affected: CVE-2021-28038 is specific to Linux systems acting as a Xen paravirtualized network ba... | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 6.5 | MEDIUM | Ignored | 2022-09-28 08:02:29 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 6.5 | MEDIUM | Not Vulnerable | 2022-01-26 05:16:16 | Ignored due to low severity | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 6.5 | MEDIUM | Ignored | 2023-08-23 03:49:31 | Ignored due to low severity |