Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-12657 |
CWE-ID | CWE-416 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for x86_64 - Extended Update Support Operating systems & Components / Operating system kpatch-patch-4_18_0-147_8_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_5_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_3_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_13_2 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_0_3 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147_0_2 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-147 (Red Hat package) Operating systems & Components / Operating system package or component |
Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU28167
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-2020-12657
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in "block/bfq-iosched.c" file related to "bfq_idle_slice_timer_body". A local user can execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.1
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.1
kpatch-patch-4_18_0-147_8_1 (Red Hat package): before 1-3.el8_1
kpatch-patch-4_18_0-147_5_1 (Red Hat package): before 1-5.el8_1
kpatch-patch-4_18_0-147_3_1 (Red Hat package): before 1-10.el8_1
kpatch-patch-4_18_0-147_13_2 (Red Hat package): before 1-1.el8_1
kpatch-patch-4_18_0-147_0_3 (Red Hat package): before 1-10.el8
kpatch-patch-4_18_0-147_0_2 (Red Hat package): before 1-10.el8
kpatch-patch-4_18_0-147 (Red Hat package): before 1-14.el8
External linkshttp://access.redhat.com/errata/RHSA-2020:2669
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.