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{"id": "USN-5044-1", "vendorId": null, "type": "ubuntu", "bulletinFamily": "unix", "title": "Linux kernel vulnerabilities", "description": "## Releases\n\n * Ubuntu 18.04 LTS\n * Ubuntu 16.04 ESM\n * Ubuntu 14.04 ESM\n\n## Packages\n\n * linux \\- Linux kernel\n * linux-aws \\- Linux kernel for Amazon Web Services (AWS) systems\n * linux-aws-hwe \\- Linux kernel for Amazon Web Services (AWS-HWE) systems\n * linux-azure \\- Linux kernel for Microsoft Azure Cloud systems\n * linux-azure-4.15 \\- Linux kernel for Microsoft Azure Cloud systems\n * linux-gcp \\- Linux kernel for Google Cloud Platform (GCP) systems\n * linux-gcp-4.15 \\- Linux kernel for Google Cloud Platform (GCP) systems\n * linux-hwe \\- Linux hardware enablement (HWE) kernel\n * linux-kvm \\- Linux kernel for cloud environments\n * linux-oracle \\- Linux kernel for Oracle Cloud systems\n * linux-raspi2 \\- Linux kernel for Raspberry Pi (V8) systems\n * linux-snapdragon \\- Linux kernel for Qualcomm Snapdragon processors\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not \nproperly handle HCI device initialization failure, leading to a double-free \nvulnerability. An attacker could use this to cause a denial of service or \npossibly execute arbitrary code. (CVE-2021-3564)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not \nproperly handle HCI device detach events, leading to a use-after-free \nvulnerability. An attacker could use this to cause a denial of service or \npossibly execute arbitrary code. (CVE-2021-3573)\n\nIt was discovered that the NFC implementation in the Linux kernel did not \nproperly handle failed connect events leading to a NULL pointer \ndereference. A local attacker could use this to cause a denial of service. \n(CVE-2021-3587)\n", "published": "2021-08-24T00:00:00", "modified": "2021-08-24T00:00:00", "cvss": {"score": 6.9, "vector": "AV:L/AC:M/Au:N/C:C/I:C/A:C"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "accessVector": "LOCAL", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 6.9}, "severity": "MEDIUM", "exploitabilityScore": 3.4, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.4, "baseSeverity": "MEDIUM"}, "exploitabilityScore": 0.5, "impactScore": 5.9}, "href": "https://ubuntu.com/security/notices/USN-5044-1", "reporter": "Ubuntu", "references": ["/security/CVE-2021-3564", "/security/CVE-2021-3587", "/security/CVE-2021-3573"], "cvelist": ["CVE-2021-3564", "CVE-2021-3573", "CVE-2021-3587"], "immutableFields": [], "lastseen": "2023-01-26T15:19:58", "viewCount": 179, "enchantments": {"dependencies": {"references": [{"type": "almalinux", "idList": ["ALSA-2021:4356"]}, {"type": "amazon", "idList": ["ALAS2-2021-1685"]}, {"type": "centos", "idList": ["CESA-2022:0620"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:873D4C50CDC37566272A2CA3925ADB7A", "CFOUNDRY:DA24B69807C52E879C56B9ABE4845D93"]}, {"type": "cloudlinux", "idList": ["CLSA-2021:1632262269", "CLSA-2021:1632262296"]}, {"type": "cve", "idList": ["CVE-2021-3564", "CVE-2021-3573", "CVE-2021-3587"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2689-1:31A23", "DEBIAN:DLA-2690-1:EA198"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-3564", "DEBIANCVE:CVE-2021-3573"]}, {"type": "f5", "idList": ["F5:K25511825"]}, {"type": "fedora", "idList": ["FEDORA:3FEEF3092824", "FEDORA:667B43096C8B", "FEDORA:C7E243096C83", "FEDORA:E0DE5304C34D"]}, {"type": "ibm", "idList": ["4777AA656AFE2A7E99CB0D93F8BE73D4229AC1A8C767E59363E711B828FD7059", "72AD5D71FF571D991FCA51BDAC7D0D303109A868FA89340C6F8CD492F9F038E3", "B2EA2FBA4D280351FEA7F9EC1921C448D44F4D9EC613590A87A15467F7D34153", "B315A585CDBD4D516E60AAEBBA49CDD9274D016108F5F855F13CF2FE3AA0F562"]}, {"type": "mageia", "idList": ["MGASA-2021-0224", "MGASA-2021-0257", "MGASA-2021-0258"]}, {"type": "nessus", "idList": ["AL2_ALAS-2021-1685.NASL", "AL2_ALASKERNEL-5_10-2022-002.NASL", "AL2_ALASKERNEL-5_4-2022-004.NASL", "ALMA_LINUX_ALSA-2021-4356.NASL", "CENTOS8_RHSA-2021-4140.NASL", "CENTOS8_RHSA-2021-4356.NASL", "CENTOS_RHSA-2022-0620.NASL", "DEBIAN_DLA-2689.NASL", 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"PHOTONOS_PHSA-2021-4_0-0032_LINUX.NASL", "PHOTONOS_PHSA-2021-4_0-0041_LINUX.NASL", "REDHAT-RHSA-2021-4140.NASL", "REDHAT-RHSA-2021-4356.NASL", "REDHAT-RHSA-2022-0620.NASL", "REDHAT-RHSA-2022-0622.NASL", "ROCKY_LINUX_RLSA-2021-4140.NASL", "ROCKY_LINUX_RLSA-2021-4356.NASL", "SLACKWARE_SSA_2021-202-01.NASL", "SL_20220223_KERNEL_ON_SL7_X.NASL", "SUSE_SU-2021-2303-1.NASL", "SUSE_SU-2021-2305-1.NASL", "SUSE_SU-2021-2325-1.NASL", "SUSE_SU-2021-2352-1.NASL", "SUSE_SU-2021-2426-1.NASL", "SUSE_SU-2021-3360-1.NASL", "SUSE_SU-2021-3361-1.NASL", "SUSE_SU-2021-3371-1.NASL", "SUSE_SU-2021-3374-1.NASL", "SUSE_SU-2021-3401-1.NASL", "SUSE_SU-2021-3440-1.NASL", "SUSE_SU-2021-3443-1.NASL", "SUSE_SU-2021-3459-1.NASL", "SUSE_SU-2022-0362-1.NASL", "SUSE_SU-2022-0364-1.NASL", "SUSE_SU-2022-0366-1.NASL", "SUSE_SU-2022-0367-1.NASL", "SUSE_SU-2022-0371-1.NASL", "SUSE_SU-2022-0372-1.NASL", "SUSE_SU-2022-0477-1.NASL", "SUSE_SU-2022-0555-1.NASL", "UBUNTU_USN-5015-1.NASL", "UBUNTU_USN-5044-1.NASL", "UBUNTU_USN-5045-1.NASL", "UBUNTU_USN-5046-1.NASL", "UBUNTU_USN-5050-1.NASL", "UBUNTU_USN-5299-1.NASL", "UBUNTU_USN-5343-1.NASL"]}, {"type": "oraclelinux", "idList": ["ELSA-2021-4356", "ELSA-2021-9404", "ELSA-2021-9406", "ELSA-2021-9450", "ELSA-2021-9451", "ELSA-2021-9458", "ELSA-2021-9460", "ELSA-2021-9485", "ELSA-2021-9488", "ELSA-2021-9534", "ELSA-2022-0620", "ELSA-2022-9348"]}, {"type": "osv", "idList": ["OSV:DLA-2689-1", "OSV:DLA-2690-1"]}, {"type": "photon", "idList": ["PHSA-2021-0032", "PHSA-2021-0041", "PHSA-2021-0243", "PHSA-2021-0251", "PHSA-2021-0366", "PHSA-2021-3.0-0243", "PHSA-2021-3.0-0251", "PHSA-2021-4.0-0032", "PHSA-2021-4.0-0041"]}, {"type": "redhat", "idList": ["RHSA-2021:4140", "RHSA-2021:4356", "RHSA-2021:4627", "RHSA-2021:5137", "RHSA-2022:0620", "RHSA-2022:0622", "RHSA-2022:0856"]}, {"type": "redhatcve", "idList": ["RH:CVE-2021-3564", "RH:CVE-2021-3573", "RH:CVE-2021-3587"]}, {"type": "rocky", "idList": ["RLSA-2021:4140", "RLSA-2021:4356"]}, {"type": "slackware", "idList": ["SSA-2021-202-01"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2021:2305-1", "OPENSUSE-SU-2021:2352-1", "OPENSUSE-SU-2022:0366-1"]}, {"type": "ubuntu", "idList": ["USN-5015-1", "USN-5045-1", "USN-5046-1", "USN-5050-1", "USN-5299-1", "USN-5343-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-3564", "UB:CVE-2021-3573", "UB:CVE-2021-3587"]}, {"type": "veracode", "idList": ["VERACODE:33110"]}]}, "score": {"value": 1.7, "vector": "NONE"}, "backreferences": {"references": [{"type": "almalinux", "idList": ["ALSA-2021:4356"]}, {"type": "amazon", "idList": ["ALAS2-2021-1685"]}, {"type": "centos", "idList": ["CESA-2022:0620"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:DA24B69807C52E879C56B9ABE4845D93"]}, {"type": "cloudlinux", "idList": ["CLSA-2021:1632262296"]}, {"type": "cve", "idList": ["CVE-2021-3564"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2689-1:31A23", "DEBIAN:DLA-2690-1:EA198"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-3564", "DEBIANCVE:CVE-2021-3573"]}, {"type": "fedora", "idList": ["FEDORA:3FEEF3092824", "FEDORA:667B43096C8B", "FEDORA:C7E243096C83", "FEDORA:E0DE5304C34D"]}, {"type": "nessus", "idList": ["AL2_ALAS-2021-1685.NASL", "DEBIAN_DLA-2689.NASL", "DEBIAN_DLA-2690.NASL", "EULEROS_SA-2021-2336.NASL", "EULEROS_SA-2021-2392.NASL", "EULEROS_SA-2021-2502.NASL", "EULEROS_SA-2021-2530.NASL", "OPENSUSE-2021-2305.NASL", "OPENSUSE-2021-2352.NASL", "ORACLELINUX_ELSA-2021-9450.NASL", "ORACLELINUX_ELSA-2021-9451.NASL", "ORACLELINUX_ELSA-2022-0620.NASL", "PHOTONOS_PHSA-2021-3_0-0243_LINUX.NASL", "PHOTONOS_PHSA-2021-3_0-0251_LINUX.NASL", "PHOTONOS_PHSA-2021-4_0-0032_LINUX.NASL", "PHOTONOS_PHSA-2021-4_0-0041_LINUX.NASL", "REDHAT-RHSA-2022-0620.NASL", "REDHAT-RHSA-2022-0622.NASL", "SLACKWARE_SSA_2021-202-01.NASL", "SL_20220223_KERNEL_ON_SL7_X.NASL", "SUSE_SU-2021-2303-1.NASL", "SUSE_SU-2021-2305-1.NASL", "SUSE_SU-2021-2325-1.NASL", "SUSE_SU-2021-2352-1.NASL", "SUSE_SU-2021-2426-1.NASL", "SUSE_SU-2022-0477-1.NASL", "SUSE_SU-2022-0555-1.NASL", "UBUNTU_USN-5015-1.NASL", "UBUNTU_USN-5299-1.NASL"]}, {"type": "oraclelinux", "idList": ["ELSA-2021-9450", "ELSA-2022-0620"]}, {"type": "photon", "idList": ["PHSA-2021-3.0-0243", "PHSA-2021-3.0-0251", "PHSA-2021-4.0-0032", "PHSA-2021-4.0-0041"]}, {"type": "redhat", "idList": ["RHSA-2022:0620", "RHSA-2022:0622"]}, {"type": "redhatcve", "idList": ["RH:CVE-2021-3564", "RH:CVE-2021-3573", "RH:CVE-2021-3587"]}, {"type": "rocky", "idList": ["RLSA-2021:4140", "RLSA-2021:4356"]}, {"type": "slackware", "idList": ["SSA-2021-202-01"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2021:2305-1", "OPENSUSE-SU-2021:2352-1"]}, {"type": "ubuntu", "idList": ["USN-5015-1", "USN-5299-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-3564", "UB:CVE-2021-3573", "UB:CVE-2021-3587"]}]}, "exploitation": null, "epss": [{"cve": "CVE-2021-3564", "epss": "0.000430000", "percentile": "0.077950000", "modified": "2023-03-17"}, {"cve": "CVE-2021-3573", "epss": "0.000420000", "percentile": "0.056410000", "modified": "2023-03-17"}], "vulnersScore": 1.7}, "_state": {"dependencies": 1674747202, "score": 1674747447, "epss": 1679109163}, "_internal": {"score_hash": "93432845fad5cf2e73abd0483ea53b83"}, "affectedPackage": [{"OS": "Ubuntu", "OSVersion": "18.04", "arch": "noarch", "packageVersion": "4.15.0-1079.87", "packageFilename": "UNKNOWN", "operator": "lt", "packageName": "linux-image-4.15.0-1079-oracle"}, {"OS": "Ubuntu", "OSVersion": "18.04", "arch": "noarch", "packageVersion": "4.15.0-1094.100", "packageFilename": "UNKNOWN", "operator": "lt", "packageName": "linux-image-4.15.0-1094-raspi2"}, {"OS": "Ubuntu", "OSVersion": "18.04", "arch": "noarch", "packageVersion": "4.15.0-1094.100", "packageFilename": "UNKNOWN", "operator": "lt", "packageName": "linux-headers-4.15.0-1010-raspi2"}, {"OS": "Ubuntu", "OSVersion": "18.04", "arch": "noarch", "packageVersion": "4.15.0-1094.100", "packageFilename": "UNKNOWN", "operator": "lt", "packageName": "linux-image-4.15.0-1010-raspi2"}, 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{"nessus": [{"lastseen": "2023-01-25T14:49:25", "description": "The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5044-1 advisory.\n\n - A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13. (CVE-2021-3564)\n\n - A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5. (CVE-2021-3573)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 0.5, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "baseScore": 6.4, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-18T00:00:00", "type": "nessus", "title": "Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5044-1)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.4, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 6.9, "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-3564", "CVE-2021-3573", "CVE-2021-3587"], "modified": "2023-01-17T00:00:00", "cpe": ["cpe:/o:canonical:ubuntu_linux:16.04:-:lts", "cpe:/o:canonical:ubuntu_linux:18.04:-:lts", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-cloud-tools-4.15.0-1110", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-edge", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-headers-4.15.0-1110", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-hwe", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-hwe-cloud-tools-4.15.0-1110", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-hwe-tools-4.15.0-1110", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-lts-18.04", "p-cpe:/a:canonical:ubuntu_linux:linux-aws-tools-4.15.0-1110", "p-cpe:/a:canonical:ubuntu_linux:linux-azure", 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'4.15.0.154.143'},\n {'osver': '18.04', 'pkgname': 'linux-virtual-hwe-16.04-edge', 'pkgver': '4.15.0.154.143'}\n];\n\nvar flag = 0;\nforeach package_array ( pkgs ) {\n var osver = NULL;\n var pkgname = NULL;\n var pkgver = NULL;\n if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];\n if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];\n if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];\n if (osver && pkgname && pkgver) {\n if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_WARNING,\n extra : ubuntu_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = ubuntu_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'linux-aws-cloud-tools-4.15.0-1110 / linux-aws-edge / etc');\n}\n", "cvss": {"score": 6.9, "vector": "AV:L/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-01-25T14:49:24", "description": "The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5045-1 advisory.\n\n - A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13. (CVE-2021-3564)\n\n - A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5. (CVE-2021-3573)\n\n - net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized. (CVE-2021-34693)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 0.5, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "baseScore": 6.4, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-18T00:00:00", "type": "nessus", "title": "Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-5045-1)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.4, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", 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The attack methodology determines the Passkey value one bit at a time. (CVE-2020-26558)\n\n - Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access. (CVE-2021-0129)\n\n - A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13. (CVE-2021-3564)\n\n - A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5. (CVE-2021-3573)\n\n - ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-38208. Reason: This candidate is a reservation duplicate of CVE-2021-38208. Notes: All CVE users should reference CVE-2021-38208 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage. (CVE-2021-3587)\n\n - Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use- after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.\n (CVE-2021-28691)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-19T00:00:00", "type": "nessus", "title": "Ubuntu 20.04 LTS / 21.04 : Linux kernel vulnerabilities (USN-5046-1)", "bulletinFamily": "scanner", "cvss2": 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It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1685 advisory.\n\n - Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time. (CVE-2020-26558)\n\n - Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access. (CVE-2021-0129)\n\n - An issue was discovered in the Linux kernel before 5.11.11. 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(CVE-2021-3655)\n\n - A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13. (CVE-2021-40490)\n\n - A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13. 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(!empty_or_null(pkg['sp'])) sp = pkg['sp'];\n if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];\n if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];\n if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];\n if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];\n if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];\n if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];\n if (reference &&\n _release &&\n rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&\n (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&\n rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;\n }\n}\n\nif (flag)\n{\n var extra = NULL;\n if (empty_or_null(applicable_repo_urls)) extra = rpm_report_get() + redhat_report_repo_caveat();\n else extra = rpm_report_get() + redhat_report_package_caveat();\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : extra\n );\n exit(0);\n}\nelse\n{\n var tested = pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / kernel / kernel-abi-whitelists / kernel-debug / etc');\n}\n", "cvss": {"score": 7.9, "vector": "AV:A/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-03-02T14:50:43", "description": "The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:0622 advisory.\n\n - kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege (CVE-2020-0465)\n\n - kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)\n\n - kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)\n\n - kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)\n\n - kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)\n\n - kernel: possible use-after-free in bluetooth module (CVE-2021-3752)\n\n - kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)\n\n - kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)\n\n - kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)\n\nNote that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2022-02-22T00:00:00", "type": "nessus", "title": "RHEL 7 : kernel