Red Hat Enterprise Linux 7 update for kernel-rt
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2023-4622 CVE-2020-36558 CVE-2023-2002 CVE-2023-4623 CVE-2023-25775 |
| CWE-ID | CWE-416 CWE-476 CWE-264 CWE-284 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
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 5 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU80583
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-4622
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the unix_stream_sendpage() function in af_unix component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
kernel-rt (Red Hat package): before 3.10.0-1160.118.1.rt56.1269.el7
CPE2.3- 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:*:
http://access.redhat.com/errata/RHSA-2024:2003
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.
2) NULL pointer dereference
EUVDB-ID: #VU66589
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-36558
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 5.5.7 involving a VT_RESIZEX. A local user can perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
kernel-rt (Red Hat package): before 3.10.0-1160.118.1.rt56.1269.el7
CPE2.3- 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:*:
http://access.redhat.com/errata/RHSA-2024:2003
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.
3) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU75163
Risk: Low
CVSSv3.1: 4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-2002
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper permissions check in the Bluetooth subsystem when handling ioctl system calls of HCI sockets. A local user can acquire a trusted socket, leading to unauthorized execution of management commands.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
kernel-rt (Red Hat package): before 3.10.0-1160.118.1.rt56.1269.el7
CPE2.3- 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:*:
http://access.redhat.com/errata/RHSA-2024:2003
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.
4) Use-after-free
EUVDB-ID: #VU81664
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-4623
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the the Linux kernel net/sched: sch_hfsc (HFSC qdisc traffic control) component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
kernel-rt (Red Hat package): before 3.10.0-1160.118.1.rt56.1269.el7
CPE2.3- 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:*:
http://access.redhat.com/errata/RHSA-2024:2003
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.
5) Improper access control
EUVDB-ID: #VU79371
Risk: Medium
CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-25775
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to improper access restrictions in the Intel Ethernet Controller RDMA driver for Linux. A remote non-authenticated attacker can bypass implemented security restrictions and gain access to sensitive information.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Real Time: 7
Red Hat Enterprise Linux for Real Time for NFV: 7
kernel-rt (Red Hat package): before 3.10.0-1160.118.1.rt56.1269.el7
CPE2.3- 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:*:
http://access.redhat.com/errata/RHSA-2024:2003
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
