Red Hat update for kernel-rt
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-6074 |
| CWE-ID | CWE-399 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
kernel-rt (Red Hat package) Operating systems & Components / Operating system package or component 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 Other |
| Vendor |
Red Hat Inc. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Resource management error
EUVDB-ID: #VU5869
Risk: Low
CVSSv4.0: 5.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2017-6074
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to cause kernel panic.
The vulnerability exists due to invalid free in the dccp_rcv_state_process() function in net/dccp/input.c file in the Linux kernel through 4.9.11 when processing DCCP_PKT_REQUEST packet data structures in the LISTEN state. A local user can use userspace application to make an IPV6_RECVPKTINFO setsockopt system call and cause kernel panic.
Successful exploitation of this vulnerability may result in denial of service condition.
Install updates from vendor's website.
kernel-rt (Red Hat package): 3.10.0-229.1.2.rt56.141.2.el7_1 - 3.10.0-514.6.1.rt56.429.el7
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
:
CPE2.3- cpe:2.3:a:red_hat:kernel-rt_redhat_package:3.10.0-229.1.2.rt56.141.2.el7_1:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:kernel-rt_redhat_package:3.10.0-229.4.2.rt56.141.6.el7_1:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:kernel-rt_redhat_package:3.10.0-229.11.1.rt56.141.11.el7_1:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_real_time_for_nfv:7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:::::*:*:*:*:*:*:*
https://access.redhat.com/errata/RHSA-2017:0295
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.
