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{"id": "RHSA-2022:0636", "vendorId": null, "type": "redhat", "bulletinFamily": "unix", "title": "(RHSA-2022:0636) Important: kernel security and bug fix update", "description": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)\n\n* kernel: use-after-free in RDMA listen() (CVE-2021-4028)\n\n* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* bpf: update to v5.7 (BZ#2019883)\n\n* Backport leftover migrate_disable BPF related change (BZ#2027687)\n\n* assuming atomic context at include/linux/filter.h:597 (BZ#2043427)", "published": "2022-02-22T14:35:32", "modified": "2022-02-22T14:45:55", "epss": [{"cve": "CVE-2021-0920", "epss": 0.00064, "percentile": 0.26396, "modified": "2023-12-06"}, {"cve": "CVE-2021-4028", "epss": 0.00042, "percentile": 0.05786, "modified": "2023-12-06"}, {"cve": "CVE-2021-4155", "epss": 0.00042, "percentile": 0.05786, "modified": "2023-12-06"}], "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:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}, "href": "https://access.redhat.com/errata/RHSA-2022:0636", "reporter": "RedHat", "references": [], "cvelist": ["CVE-2021-0920", "CVE-2021-4028", "CVE-2021-4155"], "immutableFields": [], "lastseen": "2023-12-07T16:41:31", "viewCount": 157, "enchantments": {"backreferences": {"references": [{"type": "almalinux", "idList": ["ALSA-2022:0188"]}, {"type": "amazon", "idList": ["ALAS-2022-1563", "ALAS2-2022-1749"]}, {"type": "androidsecurity", "idList": ["ANDROID:2021-11-01"]}, {"type": "attackerkb", "idList": ["AKB:495260A2-B125-4C5C-BC70-76B2DA5C1774"]}, {"type": "centos", "idList": ["CESA-2022:0620"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:C1D2F4D8A3F0384C89F6C8D93A4DCF97"]}, {"type": "cve", 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'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/debug',\n 'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/os',\n 'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/source/SRPMS',\n 'content/fastrack/rhel/workstation/6/x86_64/source/SRPMS'\n ],\n 'pkgs': [\n {'reference':'kernel-2.6.32-754.47.1.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-2.6.32-754.47.1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-abi-whitelists-2.6.32-754.47.1.el6', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-2.6.32-754.47.1.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-2.6.32-754.47.1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-devel-2.6.32-754.47.1.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-devel-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-debug-devel-2.6.32-754.47.1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-devel-2.6.32-754.47.1.el6', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-devel-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-devel-2.6.32-754.47.1.el6', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-firmware-2.6.32-754.47.1.el6', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-kdump-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},\n {'reference':'kernel-kdump-devel-2.6.32-754.47.1.el6', 'cpu':'s390x', 'release':'6', 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