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{"acknowledgement": "Red Hat would like to thank Gaoning Pan (Zhejiang University), Qiuhao Li (Harbin Institute of Technology), and Yongkang Jia (Zhejiang University) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2022:7444", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-425.3.1.rt7.213.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2022:7683", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-425.3.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2022:8940", "cpe": "cpe:/o:redhat:rhel_aus:8.2", "package": "kernel-0:4.18.0-193.95.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8941", "cpe": "cpe:/a:redhat:rhel_tus:8.2::nfv", "package": "kernel-rt-0:4.18.0-193.95.1.rt13.146.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8940", "cpe": "cpe:/o:redhat:rhel_tus:8.2", "package": "kernel-0:4.18.0-193.95.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8940", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kernel-0:4.18.0-193.95.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8989", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8673", "cpe": "cpe:/a:redhat:rhel_eus:8.4::nfv", "package": "kernel-rt-0:4.18.0-305.71.1.rt7.143.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-11-29T00:00:00Z"}, {"advisory": "RHSA-2022:8685", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kernel-0:4.18.0-305.71.1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-11-29T00:00:00Z"}, {"advisory": "RHSA-2022:8686", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2022-11-29T00:00:00Z"}, {"advisory": "RHSA-2022:8809", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kernel-0:4.18.0-372.36.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2022-12-06T00:00:00Z"}, {"advisory": "RHSA-2022:8831", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2022-12-06T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:7933", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8973", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.36.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:8974", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.36.1.rt21.108.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2022-12-13T00:00:00Z"}, {"advisory": "RHSA-2022:9082", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2022-12-15T00:00:00Z"}, {"advisory": "RHSA-2022:8809", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.36.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2022-12-06T00:00:00Z"}], "bugzilla": {"description": "kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region", "id": "2069793", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2069793"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.", "A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2022-1158", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2022-04-07T15:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-1158\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-1158\nhttps://www.openwall.com/lists/oss-security/2022/04/08/4"], "threat_severity": "Important", "upstream_fix": "kernel 5.18"}