Red Hat Enterprise Linux 8 update for kernel-rt
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 8 |
| CVE-ID | CVE-2023-1829 CVE-2023-2002 CVE-2023-2124 CVE-2023-3090 CVE-2023-3390 CVE-2023-35001 CVE-2023-35788 CVE-2023-4004 |
| CWE-ID | CWE-416 CWE-264 CWE-125 CWE-787 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #6 is available. |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 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 8 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU75448
Risk: Low
CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-1829
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tcindex_delete() function. A local user can trigger a use-after-free error and execute arbitrary code with root privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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) 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 - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
3) Out-of-bounds read
EUVDB-ID: #VU75323
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-2023-2124
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack..
The vulnerability exists due to a boundary condition within the XFS subsystem in Linux kernel. A local user can trigger an out-of-bounds read error and crash the kernel.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
4) Out-of-bounds write
EUVDB-ID: #VU78010
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-2023-3090
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the ipvlan network driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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) Use-after-free
EUVDB-ID: #VU78007
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-2023-3390
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 net/netfilter/nf_tables_api.c in the Linux kernel netfilter subsystem. A local user can trigger a use-after-fee error and escalate privileges on the system.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
6) Out-of-bounds write
EUVDB-ID: #VU78326
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-35001
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the nft_byteorder() function. A local user can trigger an out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
7) Out-of-bounds write
EUVDB-ID: #VU77502
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-2023-35788
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the fl_set_geneve_opt() function in net/sched/cls_flower.c in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
8) Use-after-free
EUVDB-ID: #VU79498
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-4004
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 in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. A local user can execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service: 8.4
kernel-rt (Red Hat package): before 4.18.0-305.103.1.rt7.178.el8_4
CPE2.3 External linkshttp://access.redhat.com/errata/RHSA-2023:4961
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.
