Vulnerability Name:

CVE-2021-4028 (CCN-226067)

Assigned:2021-10-04
Published:2021-10-04
Updated:2023-02-10
Summary:A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (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:O/RC:C)
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
7.0 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.0 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
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:6.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-416
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2021-4028

Source: secalert@redhat.com
Type: Third Party Advisory
secalert@redhat.com

Source: CCN
Type: Red Hat Bugzilla - Bug 2027201
(CVE-2021-4028) - CVE-2021-4028 kernel: use-after-free in RDMA listen()

Source: secalert@redhat.com
Type: Issue Tracking, Third Party Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: XF
Type: UNKNOWN
linux-kernel-cve20214028-priv-esc(226067)

Source: CCN
Type: Linux Kernel GIT Repository
RDMA/cma: Do not change route.addr.src_addr.ss_family

Source: secalert@redhat.com
Type: Mailing List, Patch, Vendor Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Mailing List, Patch, Vendor Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Third Party Advisory
secalert@redhat.com

Source: CCN
Type: F5 Security Advisory K37256400
Linux kernel vulnerability CVE-2021-4028

Source: CCN
Type: IBM Security Bulletin 6593539 (Spectrum Copy Data Management)
Vulnerabilities in the Linux Kernel affect IBM Spectrum Copy Data Management

Source: CCN
Type: IBM Security Bulletin 6596971 (Spectrum Protect Plus)
Multiple vulnerabilities in Linux Kernel affect IBM Spectrum Protect Plus

Source: CCN
Type: IBM Security Bulletin 6610084 (Data Risk Manager)
IBM Data Risk Manager is affected by multiple vulnerabilities including remote code execution in Apache Log4j 1.x

Source: CCN
Type: Mend Vulnerability Database
CVE-2021-4028

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*
    • Configuration RedHat 7:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 8:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*
    • Configuration RedHat 9:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 10:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*
    • Configuration RedHat 11:
  • cpe:/a:redhat:enterprise_linux:8::nfv:*:*:*:*:*
    • Configuration RedHat 12:
  • cpe:/a:redhat:enterprise_linux:8::realtime:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.14:-:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:spectrum_protect_plus:10.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:traffix_sdc:5.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:f5:traffix_sdc:5.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_copy_data_management:2.2.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:spectrum_copy_data_management:2.2.15.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20221550
    P
    		RHSA-2022:1550: kernel security and bug fix update (Important)
    2022-04-26
    oval:com.redhat.rhsa:def:20221555
    P
    		RHSA-2022:1555: kernel-rt security and bug fix update (Important)
    2022-04-26
    oval:com.redhat.rhsa:def:20221535
    P
    		RHSA-2022:1535: kpatch-patch security update (Important)
    2022-04-26
    oval:com.redhat.rhsa:def:20221185
    P
    		RHSA-2022:1185: kpatch-patch security update (Important)
    2022-04-05
    oval:com.redhat.rhsa:def:20221198
    P
    		RHSA-2022:1198: kernel security, bug fix, and enhancement update (Important)
    2022-04-05
    oval:com.redhat.rhsa:def:20221199
    P
    		RHSA-2022:1199: kernel-rt security and bug fix update (Important)
    2022-04-05
    oval:org.opensuse.security:def:1417
    P
    		Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:101995
    P
    		Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1415
    P
    		Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:101996
    P
    		Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1416
    P
    		Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:101997
    P
    		Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3) (Important)
    2022-02-02
    oval:org.opensuse.security:def:1407
    P
    		Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101988
    P
    		Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1414
    P
    		Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1408
    P
    		Security update for the Linux Kernel (Live Patch 5 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101989
    P
    		Security update for the Linux Kernel (Live Patch 6 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1409
    P
    		Security update for the Linux Kernel (Live Patch 6 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101993
    P
    		Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101987
    P
    		Security update for the Linux Kernel (Live Patch 4 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:1413
    P
    		Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3) (Important)
    2022-02-01
    oval:org.opensuse.security:def:101994
    P
    		Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP3) (Important)
    2022-02-01
    BACK
    linux linux kernel 5.14 -
    ibm spectrum protect plus 10.1.0
    f5 traffix sdc 5.0.0
    f5 traffix sdc 5.1.0
    ibm spectrum copy data management 2.2.0.0
    ibm spectrum copy data management 2.2.15.0