Red Hat Enterprise Linux Server 8.1 update for kpatch-patch
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 7 |
| CVE-ID | CVE-2021-4028 CVE-2021-4083 CVE-2022-0330 CVE-2022-0492 CVE-2022-22942 CVE-2021-0920 CVE-2021-4155 |
| CWE-ID | CWE-416 CWE-119 CWE-264 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #4 is available. Vulnerability #6 is being exploited in the wild. |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_58_1 (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 7 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU60797
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-4028
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 RDMA listen()
function in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
2) Use-after-free
EUVDB-ID: #VU61246
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-4083
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 Linux kernel's garbage collection for Unix domain socket file handlers. A local user can call close() and fget() simultaneously and can potentially trigger a race condition, which in turn leads to a use-after-free error and allows privilege escalation.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
3) Buffer overflow
EUVDB-ID: #VU60988
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2022-0330
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a random memory access flaw caused by a missing TLB flush in Linux kernel GPU i915 kernel driver functionality. A local user can execute arbitrary code on the system with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
4) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU61245
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2022-0492
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 a logic error within the cgroup_release_agent_write() function in kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
5) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU61217
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2022-22942
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.
Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
6) Use-after-free
EUVDB-ID: #VU59811
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-0920
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_scm_to_skb() function of af_unix.c in Linux kernel. A local user can run a specially crafted program to trigger a race condition and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
7) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU59812
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-4155
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.
Install updates from vendor's website.
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 8.1
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 8.1
kpatch-patch-4_18_0-147_58_1 (Red Hat package): before 1-1.el8_1
CPE2.3 External links
http://access.redhat.com/errata/RHSA-2022:0958
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
