Red Hat Enterprise Linux 9 update for kernel-rt
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-2078 CVE-2022-34918 |
| CWE-ID | CWE-119 CWE-843 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild. |
| Vulnerable software |
Red Hat Enterprise Linux for Real Time Operating systems & Components / Operating system Red Hat Enterprise Linux for Real Time for NFV Operating systems & Components / Operating system kernel-rt (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Buffer overflow
EUVDB-ID: #VU65642
Risk: Low
CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2022-2078
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the nft_set_desc_concat_parse() function in Linux kernel. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 9
kernel-rt (Red Hat package): 5.14.0-70.22.1.rt21.94.el9_0
Red Hat Enterprise Linux for Real Time for NFV: 9
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time:9:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:kernel-rt_redhat_package:5.14.0-70.22.1.rt21.94.el9_0:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time_for_nfv:9:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2022:6582
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. However, proof of concept for this vulnerability is available.
2) Type Confusion
EUVDB-ID: #VU65360
Risk: Low
CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]
CVE-ID: CVE-2022-34918
CWE-ID:
CWE-843 - Type confusion
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists in the Linux kernel’s Netfilter subsystem in the way a user provides incorrect input of the NFT_DATA_VERDICT type. A local user can pass specially crafted data to the application, trigger a type confusion error and escalate privileges on the system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 9
kernel-rt (Red Hat package): 5.14.0-70.22.1.rt21.94.el9_0
Red Hat Enterprise Linux for Real Time for NFV: 9
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time:9:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:kernel-rt_redhat_package:5.14.0-70.22.1.rt21.94.el9_0:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time_for_nfv:9:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2022:6582
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?
Yes. This vulnerability is being exploited in the wild.
