{"id":"CVE-2026-98860","title":"kernel: HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request (CVE-2026-98860)","summary":"A flaw was found in the Linux kernel's Human Interface Device (HID) subsystem. This flaw can lead to information disclosure when hardware communication errors occur. Due to an improper integer comparison in the Berkeley Packet Filter (BPF)…","severity":"low","cvss":1.9,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N","cvssSource":"vendor","cwe":"CWE-908","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-24","sourceUpdated":"2026-10-24T06:31:40+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98860.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98860.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98860"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555220"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98860"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98860"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98860.mbox"},{"url":"https://git.kernel.org/stable/c/8b85ef0f561039e249c3f883c5280a1449c6dbee"},{"url":"https://git.kernel.org/stable/c/97be6396817bd3b11d06239010d27902940bfaa9"},{"url":"https://git.kernel.org/stable/c/f9f808227554b2c116fd07dd2328ecd74ea3f411"},{"url":"https://git.kernel.org/stable/c/3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00157,"epssPercentile":0.04783,"ingestedAt":"2026-10-18T16:47:32.459Z","slug":"CVE-2026-98860","body":"## Overview\n\nA flaw was found in the Linux kernel's Human Interface Device (HID) subsystem. This flaw can lead to information disclosure when hardware communication errors occur. Due to an improper integer comparison in the Berkeley Packet Filter (BPF) handler, negative error return codes are mistakenly treated as a valid buffer size, causing failed device requests to be reported as successful. A local user running BPF programs can leverage this issue to process unmodified buffers containing uninitialized or stale data.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98860.json)\n\n**kernel: HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request** — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-24.\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":10,"depthScoreParts":{"impact":10.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228530,"id":"CVE-2026-98860","ts":1792844775608,"field":"cvss","old":null,"new":"1.9"},{"seq":228529,"id":"CVE-2026-98860","ts":1792844775608,"field":"severity","old":"none","new":"low"}]}