{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72352", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.921Z", "datePublished": "2026-08-15T05:55:54.809Z", "dateUpdated": "2026-08-17T05:43:09.954Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:43:09.954Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: bpf: Fix hid_bpf_get_data() range check\n\nhid_bpf_get_data() returns a pointer into the HID-BPF context data when\nthe caller-provided offset and size fit inside ctx->allocated_size.\n\nThe current check adds rdwr_buf_size and offset before comparing the\nresult against ctx->allocated_size. Since both values are unsigned, a\nvery large size can wrap the sum below ctx->allocated_size and make the\nhelper return a pointer even though the requested range is not contained\nin the backing buffer.\n\nUse check_add_overflow() to reject wrapped range ends before comparing\nthe requested range end against ctx->allocated_size." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The flaw is only reachable through local bpf() syscalls that load BPF_PROG_TYPE_STRUCT_OPS HID-BPF programs and attach them via BPF_LINK_CREATE; per kernel CNA guidance BPF subsystem bugs are Local even though callbacks may later run on HID input.\nAC:L - Once a HID-BPF program is loaded, the attacker fully controls offset and rdwr_buf_size passed to hid_bpf_get_data(); values such as offset=2 with size=~0 reliably wrap the unsigned sum and bypass the check without races or uncontrollable memory layout.\nPR:L - Loading BPF_MAP_TYPE_STRUCT_OPS maps and BPF_PROG_TYPE_STRUCT_OPS programs requires CAP_BPF (sysctl_unprivileged_bpf_disabled blocks unprivileged BPF); per kernel CNA guidance this is Low because CAP_BPF can be delegated via BPF tokens into user namespaces, not only init-namespace root.\nUI:N - The attacker loads and attaches their own HID-BPF program and triggers hid_bpf_get_data() from its callbacks; no separate victim action such as mounting, opening a file, or plugging in a device is required beyond the attacker's own bpf operations.\nS:U - Exploitation corrupts kernel heap memory from within the same kernel security authority to achieve local privilege escalation; it does not inherently cross VM, IOMMU, or container sandbox boundaries as a distinct scope change.\nC:H - The overflow lets BPF code obtain a pointer outside the allocated HID-BPF context buffer and read adjacent kernel heap memory, enabling arbitrary kernel information disclosure and supporting further exploitation primitives.\nI:H - The same out-of-bounds pointer allows arbitrary kernel heap writes through the returned buffer, enabling control of adjacent objects and potential arbitrary code execution in kernel context.\nA:H - Large out-of-bounds reads/writes against kmalloc-backed HID-BPF buffers can corrupt critical kernel structures and cause kernel oops, panic, or hang during HID-BPF callback execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/bpf/hid_bpf_dispatch.c" ], "versions": [ { "version": "658ee5a64fcfbbf758447fa3af425729eaabb0dc", "lessThan": "ca373549140dfb386aa2de38364b58441b1f4885", "status": "affected", "versionType": "git" }, { "version": "658ee5a64fcfbbf758447fa3af425729eaabb0dc", "lessThan": "61a959b82f1aecd6d2d35c208013dd077cac9d10", "status": "affected", "versionType": "git" }, { "version": "658ee5a64fcfbbf758447fa3af425729eaabb0dc", "lessThan": "f81bc5a709dcbaf2a3bbef4ca7167f93900cc39f", "status": "affected", "versionType": "git" }, { "version": "658ee5a64fcfbbf758447fa3af425729eaabb0dc", "lessThan": "2d044049421dd48212b28646a850749d4a2d57fa", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/bpf/hid_bpf_dispatch.c" ], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ca373549140dfb386aa2de38364b58441b1f4885" }, { "url": "https://git.kernel.org/stable/c/61a959b82f1aecd6d2d35c208013dd077cac9d10" }, { "url": "https://git.kernel.org/stable/c/f81bc5a709dcbaf2a3bbef4ca7167f93900cc39f" }, { "url": "https://git.kernel.org/stable/c/2d044049421dd48212b28646a850749d4a2d57fa" } ], "title": "HID: bpf: Fix hid_bpf_get_data() range check", "x_generator": { "engine": "bippy-1.2.0" } } } }