{"id":"CVE-2026-98804","title":"kernel: net: page_pool: fix use-after-free in page_pool_recycle_ring_bulk() (CVE-2026-98804)","summary":"A flaw was found in the Linux kernel's networking subsystem. When page pool statistics are enabled, a race condition in the bulk recycling mechanism can allow a memory pool to be freed before statistical updates finish processing. An attac…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T15:35:30+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98804.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98804.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98804"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555126"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98804"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98804"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98804.mbox"},{"url":"https://git.kernel.org/stable/c/f78d45d5f1ac4141a03f033141368671da4293e4"},{"url":"https://git.kernel.org/stable/c/0b105f4eb78e5ee39e5a74c47c9efd69b6ac849c"},{"url":"https://git.kernel.org/stable/c/bdea4980182e3badac74f04df6c07492b91c569e"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00198,"epssPercentile":0.09497,"ingestedAt":"2026-10-18T16:47:32.481Z","slug":"CVE-2026-98804","body":"## Overview\n\nA flaw was found in the Linux kernel's networking subsystem. When page pool statistics are enabled, a race condition in the bulk recycling mechanism can allow a memory pool to be freed before statistical updates finish processing. An attacker capable of triggering concurrent network buffer teardown could exploit this use-after-free flaw to cause a Denial of Service (DoS) via a system crash or potentially corrupt system memory.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98804.json)\n\n**kernel: net: page_pool: fix use-after-free in page_pool_recycle_ring_bulk()** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\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\nFix deferred","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228726,"id":"CVE-2026-98804","ts":1792844938047,"field":"cvss","old":null,"new":"4.7"},{"seq":228725,"id":"CVE-2026-98804","ts":1792844938047,"field":"severity","old":"none","new":"medium"}]}