{"id":"CVE-2026-98384","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_…","severity":"medium","published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T08:16:56.940","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98384","references":[{"url":"https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98384.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98384"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548394"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98384"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98384"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98384.mbox"}],"tags":["nvd","csaf","vex","red-hat","cve.org"],"ingestedAt":"2026-10-09T08:29:41.352Z","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 9","openshift_container_platform 4"],"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-125"],"epss":0.00156,"epssPercentile":0.0473,"slug":"CVE-2026-98384","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()\n\nsk_protocol lives in struct sock, not in struct sock_common. A timewait\nor request sock handed to bpf_sock_destroy() by the tcp iterator is\nneither, so reading sk->sk_protocol runs past the object:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0\nRead of size 2 at addr ffff8881047d11b4 by task test_progs/428\n\nTainted: [W]=WARN\nCall Trace:\n <TASK>\n dump_stack_lvl+0x91/0xf0\n print_report+0xd1/0x630\n kasan_report+0xf3/0x130\n __asan_report_load2_noabort+0x14/0x30\n bpf_sock_destroy+0xc7/0xe0\n bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7\n bpf_iter_run_prog+0x538/0xde0\n bpf_iter_tcp_seq_show+0x26b/0x4b0\n bpf_seq_read+0x424/0x1210\n vfs_read+0x197/0xe40\n ksys_read+0x119/0x240\n __x64_sys_read+0x72/0xc0\n x64_sys_call+0x647/0x27e0\n do_syscall_64+0xe5/0x610\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nOnly check sk_protocol on full socks. tcp_abort() already knows how to\ndeal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it\nnever matched the code.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98384.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219109,"id":"CVE-2026-98384","ts":1791707064420,"field":"cvss","old":null,"new":"5.5"},{"seq":219108,"id":"CVE-2026-98384","ts":1791707064420,"field":"severity","old":"none","new":"medium"}]}