Vulnerability Name:

CVE-2021-38166 (CCN-207044)

Assigned:2021-08-07
Published:2021-08-07
Updated:2022-04-01
Summary:In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket.
Note: exploitation might be impractical without the CAP_SYS_ADMIN capability.
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
8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/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): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
CWE-190
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-38166

Source: XF
Type: UNKNOWN
linux-kernel-cve202138166-integer-overflow(207044)

Source: CCN
Type: Linux Kernel GIT Repository
bpf: Fix integer overflow involving bucket_size

Source: MISC
Type: Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-b22606e88b

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-f35f45a76f

Source: MISC
Type: Patch, Vendor Advisory
https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu@gmail.com/

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210909-0001/

Source: DEBIAN
Type: Third Party Advisory
DSA-4978

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 5.13.8)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.13:-:*:*:*:*:*:*

    • * 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:7588
    P
    		libekmfweb1-2.25.0-150500.7.3 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:780
    P
    		Security update for snakeyaml (Important)
    2022-09-26
    oval:org.opensuse.security:def:3681
    P
    		Security update for fwupd (Important)
    2022-07-07
    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: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: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
    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:4576
    P
    		Security update for the Linux Kernel (Live Patch 19 for SLE 12 SP5) (Important)
    2022-04-15
    oval:org.opensuse.security:def:6182
    P
    		Security update for zsh (Important)
    2022-03-04
    oval:org.opensuse.security:def:6178
    P
    		Security update for webkit2gtk3 (Important)
    2022-03-03
    oval:org.opensuse.security:def:112507
    P
    		kernel-devel-5.14.6-1.4 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:42222
    P
    		Security update for the Linux Kernel (Important)
    2021-10-13
    oval:org.opensuse.security:def:105999
    P
    		kernel-devel-5.14.6-1.4 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:67569
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:74733
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:1218
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:101803
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:99145
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:65665
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:8393
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:1781
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:102333
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:100331
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:68359
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:6480
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:1268
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:101878
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:99417
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:10696
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:100660
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:76339
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:7270
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:111726
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:101921
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:99680
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:67271
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:73892
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:1125
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:101511
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:70836
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:64770
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:1737
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:102295
    P
    		Security update for the Linux Kernel (Important)
    2021-09-23
    oval:org.opensuse.security:def:99995
    P
    		 (Important)
    2021-09-23
    oval:org.opensuse.security:def:76335
    P
    		Security update for the Linux Kernel (Important)
    2021-09-21
    oval:org.opensuse.security:def:111720
    P
    		Security update for the Linux Kernel (Important)
    2021-09-21
    oval:org.opensuse.security:def:67267
    P
    		Security update for the Linux Kernel (Important)
    2021-09-21
    oval:org.opensuse.security:def:68677
    P
    		Security update for the Linux Kernel (Important)
    2021-09-21
    oval:org.opensuse.security:def:1550
    P
    		Security update for the Linux Kernel (Important)
    2021-09-21
    BACK
    linux linux kernel *
    fedoraproject fedora 33
    fedoraproject fedora 34
    debian debian linux 11.0
    linux linux kernel 5.13 -