{"id":"CVE-2022-2905","title":"An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map","summary":"An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to gain unauthorized access t…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-125","CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 6.0","linux_kernel = 6.0","enterprise_linux = 8.0","debian_linux = 10.0"],"patched":["linux_kernel 6.0"],"published":"2022-09-09","updated":"2026-10-14","sourceUpdated":"2026-10-14T14:17:22.160","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-2905","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2121800","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"secalert@redhat.com"},{"url":"https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel%40iogearbox.net/","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2121800","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel%40iogearbox.net/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-831302.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00355,"epssPercentile":0.2743,"ingestedAt":"2026-10-14T15:36:13.918Z","slug":"CVE-2022-2905","body":"## Overview\n\nAn out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to gain unauthorized access to data.\n\n## Affected\n\n- `linux_kernel < 6.0`\n- `linux_kernel = 6.0`\n- `enterprise_linux = 8.0`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.0`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}