Vulnerability Name:

CVE-2021-4204 (CCN-217028)

Assigned:2022-01-11
Published:2022-01-11
Updated:2026-06-17
Summary:An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
CVSS v40 Severity:
CVSS v3.x Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
6.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-20
CWE-119
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2021-4204

Source: af854a3a-2127-422b-91ae-364da2661108
Type: UNKNOWN
af854a3a-2127-422b-91ae-364da2661108

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: af854a3a-2127-422b-91ae-364da2661108
Type: UNKNOWN
af854a3a-2127-422b-91ae-364da2661108

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve20214204-priv-esc(217028)

Source: CCN
Type: oss-sec Mailing List, Tue, 11 Jan 2022 20:00:08 +0800
CVE-2021-4204: Linux Kernel eBPF Improper Input Validation Vulnerability

Source: af854a3a-2127-422b-91ae-364da2661108
Type: UNKNOWN
af854a3a-2127-422b-91ae-364da2661108

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: af854a3a-2127-422b-91ae-364da2661108
Type: UNKNOWN
af854a3a-2127-422b-91ae-364da2661108

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Linux Kernel Web site
The Linux Kernel Archives

Source: af854a3a-2127-422b-91ae-364da2661108
Type: UNKNOWN
af854a3a-2127-422b-91ae-364da2661108

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:Configuration 1:
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 5.8.0)
  • OR cpe:2.3:o:linux:linux_kernel:5.8:-:*:*:*:*:*:*

    • Configuration 2:
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:2.3:o:linux:linux_kernel:5.8:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.9:rc1:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.13:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
  • OR cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8029
    P
    		kernel-docs-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-20
    oval:org.opensuse.security:def:8090
    P
    		reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7539
    P
    		kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:95383
    P
    		Security update for the Linux Kernel (Important)
    2022-08-01
    oval:org.opensuse.security:def:627
    P
    		Security update for the Linux Kernel (Important)
    2022-08-01
    oval:org.opensuse.security:def:3753
    P
    		Security update for the Linux Kernel (Important)
    2022-08-01
    oval:org.opensuse.security:def:95356
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:93477
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3720
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:589
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:95273
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:94263
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3794
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:93630
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3726
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:95335
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:94472
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:93159
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3643
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:95416
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:93837
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:95350
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:93319
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3705
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:95427
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:94051
    P
    		 (Important)
    2022-07-21
    oval:org.opensuse.security:def:3783
    P
    		Security update for the Linux Kernel (Important)
    2022-07-21
    oval:org.opensuse.security:def:3453
    P
    		clamav-0.101.3-1.19 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3567
    P
    		libXtst6-1.2.2-7.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3398
    P
    		wpa_supplicant-2.6-15.10.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3448
    P
    		busybox-1.21.1-3.3 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:95028
    P
    		kernel-docs-5.14.21-150400.22.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:2960
    P
    		kernel-64kb-5.14.21-150400.22.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95078
    P
    		reiserfs-kmp-default-5.14.21-150400.22.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95083
    P
    		kernel-azure-5.14.21-150400.12.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94590
    P
    		kernel-64kb-5.14.21-150400.22.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95197
    P
    		kernel-default-extra-5.14.21-150400.22.1 on GA media (Moderate)
    2022-06-22
    BACK
    linux linux kernel *
    linux linux kernel 5.8.0 -
    debian debian linux 11.0
    redhat enterprise linux 9.0
    netapp h300s -
    netapp h500s -
    netapp h700s -
    netapp h410s -
    netapp h410c -
    linux linux kernel 5.8.0 -
    linux linux kernel 5.9 rc1
    linux linux kernel 5.10 -
    linux linux kernel 5.11
    linux linux kernel 5.12 -
    linux linux kernel 5.13 -
    linux linux kernel 5.14 -
    linux linux kernel 5.15 -
    linux linux kernel 5.16 -