Vulnerability Name:

CVE-2022-1263 (CCN-223756)

Assigned:2022-04-07
Published:2022-04-07
Updated:2022-09-07
Summary:A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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): None
Integrity (I): None
Availibility (A): High
5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
4.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2022-1263

Source: MISC
Type: Third Party Advisory
https://access.redhat.com/security/cve/CVE-2022-1263

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2072698

Source: XF
Type: UNKNOWN
linux-kernel-cve20221263-dos(223756)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4

Source: CCN
Type: oss-sec Mailing List, Thu, 7 Apr 2022 17:16:26 +0800
Re: Linux kernel: x86/kvm: null-ptr-deref in kvm_dirty_ring_push

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

Source: CCN
Type: Mend Vulnerability Database
CVE-2022-1263

Source: MISC
Type: Exploit, Mailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/07/1

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 5.18)

    • Configuration 2:
  • cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

    • 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: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
    oval:org.opensuse.security:def:51945
    P
    		Security update for the Linux Kernel (Important)
    2022-11-01
    BACK
    linux linux kernel 5.18 rc1
    linux linux kernel 5.18 rc2
    linux linux kernel *
    redhat enterprise linux 8.0
    redhat enterprise linux 9.0
    linux linux kernel -