Vulnerability Name:

CVE-2022-2905 (CCN-234703)

Assigned:2022-08-26
Published:2022-08-26
Updated:2022-11-21
Summary:An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to gain unauthorized access to data.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
5.0 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/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): None
7.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
6.5 Medium (CCN 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:P/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
CVSS v2 Severity:6.2 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-125
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2022-2905

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2121800

Source: XF
Type: UNKNOWN
linux-kernel-cve20222905-info-disc(234703)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update

Source: MISC
Type: Exploit, Mailing List, Patch, Vendor Advisory
https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel@iogearbox.net/

Source: CCN
Type: oss-sec Mailing List, Sat, 27 Aug 2022 00:23:03 +0800
Re: Linux kernel slab-out-of-bound read in bpf

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

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 6.0)
  • OR cpe:/o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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

    • * 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:762
    P
    		Security update for the Linux Kernel (Important)
    2022-09-16
    oval:org.opensuse.security:def:764
    P
    		Security update for the Linux Kernel (Important)
    2022-09-16
    oval:org.opensuse.security:def:757
    P
    		Security update for the Linux Kernel (Important)
    2022-09-14
    BACK
    linux linux kernel 6.0 rc3
    linux linux kernel *
    linux linux kernel 6.0 rc1
    linux linux kernel 6.0 rc2
    redhat enterprise linux 8.0
    debian debian linux 10.0
    linux linux kernel -