{"id":"CVE-2026-80929","title":"kernel: sysctl: move the \"cad_pid\" entry from pid_table[] to kern_reboot_table[] (CVE-2026-80929)","summary":"A flaw was found in the Linux kernel. A non-root user can exploit a vulnerability in the `sysctl` mechanism, specifically related to the `cad_pid` entry. By unsharing process ID (PID) and user namespaces, a local attacker can modify this g…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-279","vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","affected":["enterprise_linux 6"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T13:54:03+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80929.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80929.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80929"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532283"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80929"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80929"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80929.mbox"},{"url":"https://git.kernel.org/stable/c/e8527de7fea191fda704792a56081f9009aeec37"},{"url":"https://git.kernel.org/stable/c/a09bc4eaa67e1a72df3b6d0beb3afeef1e1fdfcd"},{"url":"https://git.kernel.org/stable/c/7170ca01623b399c97f2ae9d3e228badc1f25ea3"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00161,"epssPercentile":0.05761,"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.476Z","slug":"CVE-2026-80929","body":"## Overview\n\nA flaw was found in the Linux kernel. A non-root user can exploit a vulnerability in the `sysctl` mechanism, specifically related to the `cad_pid` entry. By unsharing process ID (PID) and user namespaces, a local attacker can modify this global system control from a child namespace. This allows a user without administrative privileges to alter a critical system setting that should only be modifiable by the root user, leading to privilege escalation.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80929.json)\n\n**kernel: sysctl: move the \"cad_pid\" entry from pid_table[] to kern_reboot_table[]** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nAffected:\n\n- Red Hat Enterprise Linux 6\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nOut of support scope","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202777,"id":"CVE-2026-80929","ts":1789403715866,"field":"cvss","old":"7.8","new":"7"},{"seq":183823,"id":"CVE-2026-80929","ts":1789356677558,"field":"cvss","old":"7.8","new":"7"},{"seq":153110,"id":"CVE-2026-80929","ts":1789285349047,"field":"cvss","old":null,"new":"7.8"},{"seq":153109,"id":"CVE-2026-80929","ts":1789285349047,"field":"severity","old":"none","new":"high"},{"seq":147468,"id":"CVE-2026-80929","ts":1789270211027,"field":"cvss","old":null,"new":"7"},{"seq":147467,"id":"CVE-2026-80929","ts":1789270211027,"field":"severity","old":"none","new":"high"},{"seq":109222,"id":"CVE-2026-80929","ts":1789183730787,"field":"cvss","old":null,"new":"7"},{"seq":109221,"id":"CVE-2026-80929","ts":1789183730787,"field":"severity","old":"none","new":"high"}]}