Red Hat Enterprise Linux 7 update for linux-firmware
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-20592 |
| CWE-ID | CWE-758 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Red Hat Enterprise Linux for Power, little endian Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, big endian Operating systems & Components / Operating system Red Hat Enterprise Linux for IBM z Systems Operating systems & Components / Operating system Red Hat Enterprise Linux for Scientific Computing Operating systems & Components / Operating system Red Hat Enterprise Linux Desktop Operating systems & Components / Operating system Red Hat Enterprise Linux Workstation Operating systems & Components / Operating system Red Hat Enterprise Linux Server Operating systems & Components / Operating system linux-firmware (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Reliance on undefined behavior
EUVDB-ID: #VU84028
Risk: Low
CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-20592
CWE-ID:
CWE-758 - Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to unexpected behavior of the INVD instruction in some AMD CPUs. A malicious hypervisor can affect cache line write-back behavior of the CPU and modify guest virtual machine (VM) memory.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian: 7
Red Hat Enterprise Linux for Power, big endian: 7
Red Hat Enterprise Linux for IBM z Systems: 7
Red Hat Enterprise Linux for Scientific Computing: 7
Red Hat Enterprise Linux Desktop: 7
Red Hat Enterprise Linux Workstation: 7
Red Hat Enterprise Linux Server: 7
linux-firmware (Red Hat package): before 20200421-82.git78c0348.el7_9
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_scientific_computing:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_desktop:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_workstation:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:linux-firmware_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2024:0753
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
