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{"affected_release": [{"advisory": "RHSA-2021:3328", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-1160.41.1.rt56.1181.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-31T00:00:00Z"}, {"advisory": "RHSA-2021:3327", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-1160.41.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-31T00:00:00Z"}, {"advisory": "RHSA-2022:1975", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-372.9.1.rt7.166.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2022:1988", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-372.9.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation", "id": "1946684", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1946684"}, "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-119", "details": ["BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.", "A flaw was found in the Linux kernels eBPF implementation. By default, accessing the eBPF verifier is only accessible to privileged users with CAP_SYS_ADMIN. A local user with the ability to insert eBPF instructions can abuse a flaw in eBPF to corrupt memory. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."], "mitigation": {"lang": "en:us", "value": "This issue does not affect most systems by default. An administrator would need to have enabled the BPF JIT to be affected.\nIt can be disabled immediately with the command:\n# echo 0 > /proc/sys/net/core/bpf_jit_enable\nOr it can be disabled for all subsequent boots of the system by setting a value in /etc/sysctl.d/44-bpf-jit-disable\n## start file ##\nnet.core.bpf_jit_enable=0\n## end file ##"}, "name": "CVE-2021-29154", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"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": "Out of support scope", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-04-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-29154\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-29154"], "statement": "This flaw is rated as having Moderate impact as eBPF requires a privileged user on Red Hat Enterprise Linux to correctly load eBPF instructions that can be exploited.", "threat_severity": "Moderate"}