Red Hat Enterprise Linux 8 update for kpatch-patch
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2022-4378 CVE-2023-0266 CVE-2023-0386 CVE-2023-1476 |
| CWE-ID | CWE-121 CWE-416 CWE-264 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild. Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux for Power, little endian Operating systems & Components / Operating system Red Hat Enterprise Linux for x86_64 Operating systems & Components / Operating system kpatch-patch-4_18_0-425_3_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-425_13_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-425_10_1 (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Stack-based buffer overflow
EUVDB-ID: #VU70442
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-2022-4378
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the __do_proc_dointvec() function. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian: 8
Red Hat Enterprise Linux for x86_64: 8.0
kpatch-patch-4_18_0-425_3_1 (Red Hat package): before 1-6.el8
kpatch-patch-4_18_0-425_13_1 (Red Hat package): before 1-2.el8_7
kpatch-patch-4_18_0-425_10_1 (Red Hat package): before 1-4.el8_7
External linkshttp://access.redhat.com/errata/RHSA-2023:1659
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) Use-after-free
EUVDB-ID: #VU71482
Risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2023-0266
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 snd_ctl_elem_read() function in the Linux kernel sound subsystem. A local user can trigger a use-after-free error and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.
Install updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian: 8
Red Hat Enterprise Linux for x86_64: 8.0
kpatch-patch-4_18_0-425_3_1 (Red Hat package): before 1-6.el8
kpatch-patch-4_18_0-425_13_1 (Red Hat package): before 1-2.el8_7
kpatch-patch-4_18_0-425_10_1 (Red Hat package): before 1-4.el8_7
External linkshttp://access.redhat.com/errata/RHSA-2023:1659
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.
3) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU74410
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-2023-0386
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 unauthorized access to execution of setuid files in OverlayFS subsystem when copying a capable file from a nosuid mount into another mount. A local user can execute arbitrary code with root privileges.
Install updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian: 8
Red Hat Enterprise Linux for x86_64: 8.0
kpatch-patch-4_18_0-425_3_1 (Red Hat package): before 1-6.el8
kpatch-patch-4_18_0-425_13_1 (Red Hat package): before 1-2.el8_7
kpatch-patch-4_18_0-425_10_1 (Red Hat package): before 1-4.el8_7
External linkshttp://access.redhat.com/errata/RHSA-2023:1659
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: #VU76016
Risk: Low
CVSSv3.1: 2.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-1476
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a missing patch for #VU68422 (CVE-2022-41222). A local user can gain access to sensitive information. MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian: 8
Red Hat Enterprise Linux for x86_64: 8.0
kpatch-patch-4_18_0-425_3_1 (Red Hat package): before 1-6.el8
kpatch-patch-4_18_0-425_13_1 (Red Hat package): before 1-2.el8_7
kpatch-patch-4_18_0-425_10_1 (Red Hat package): before 1-4.el8_7
External linkshttp://access.redhat.com/errata/RHSA-2023:1659
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.
