Vulnerability Name:

CVE-2022-42896 (CCN-240820)

Assigned:2022-11-02
Published:2022-11-02
Updated:2023-03-01
Summary:Linux Kernel could allow a remote attacker from within the local network to execute arbitrary code on the system, caused by multiple use-after-free vulnerabilities in the net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions. By using Bluetooth within proximity of the victim, an attacker could exploit this vulnerability to execute arbitrary code on the system and leak kernel memory.
CVSS v3 Severity:8.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N)
7.0 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): None
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:5.2 Medium (CCN CVSS v2 Vector: AV:A/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2022-42896

Source: XF
Type: UNKNOWN
linux-kernel-cve202242896-code-exec(240820)

Source: CCN
Type: Linux Kernel GIT Repository
Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM

Source: cve-coordination@google.com
Type: Patch, Third Party Advisory
cve-coordination@google.com

Source: cve-coordination@google.com
Type: Patch, Vendor Advisory
cve-coordination@google.com

Vulnerable Configuration: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:7539
    P
    kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:8090
    P
    reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)
    2023-06-12
    BACK
    linux linux kernel -