Updated: 2026-02-27 03:10:18.514157
Description:
A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 6.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 6.5 | MEDIUM | Ignored | 2025-09-23 11:57:05 | This issue is confined to the Linux CIFS/SMB client code path, so systems that do not load or use th... | |
| CentOS 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:49 | Ignored due to low severity | |
| CentOS 7 ELS | kernel | 3.10.0 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:49 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 6.5 | MEDIUM | Ignored | 2024-06-24 11:29:22 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 6.5 | MEDIUM | Ignored | 2024-06-24 11:29:23 | Ignored due to low severity | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:49 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:49 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:52 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:50 | Ignored due to low severity | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 6.5 | MEDIUM | Ignored | 2023-11-13 02:22:50 | Ignored due to low severity |