Updated: 2024-01-11 19:23:39.214836
Description:
An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | HIGH | 7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated |
|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7 | HIGH | Released | CLSA-2024:1725293298 | 2024-09-02 12:28:53 |
| AlmaLinux 9.2 FIPS | kernel | 5.14.0 | 7 | HIGH | Released | CLSA-2024:1725304408 | 2024-09-02 17:38:29 |
| CentOS 6 ELS | kernel | 2.6.32 | 7 | HIGH | Not Vulnerable | 2023-12-26 13:10:13 | |
| CentOS 7 ELS | kernel | 3.10.0 | 7 | HIGH | Not Vulnerable | 2024-07-02 11:21:32 | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 7 | HIGH | Released | CLSA-2023:1701963303 | 2023-12-07 13:10:24 |
| CentOS 8.5 ELS | kernel | 4.18.0 | 7 | HIGH | Released | CLSA-2023:1701962635 | 2023-12-07 13:10:25 |
| CloudLinux 6 ELS | kernel | 2.6.32 | 7 | HIGH | Not Vulnerable | 2024-05-08 10:18:58 | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7 | HIGH | Not Vulnerable | 2023-12-26 13:10:11 | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 7 | HIGH | Not Vulnerable | 2023-11-27 08:39:03 | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7 | HIGH | Not Vulnerable | 2023-11-27 08:39:03 |