CVE-2026-98860

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98860", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.376Z", "datePublished": "2026-10-18T15:51:21.403Z", "dateUpdated": "2026-10-19T09:26:54.770Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:26:54.770Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: bpf: cast size to ssize_t when checking hid_bpf_hw_request\n\nAs reported by Sashiko:\nIf a transport driver encounters a hardware error and returns a negative\nerror code such as -EPIPE, ret is implicitly promoted to size_t when\ncompared against size. This causes the negative error code to evaluate\nas a large positive number, making the (ret > size) condition true.\n\nThis silently converts the hardware error into a success return value\nand copies the unmodified buffer back, which could leave BPF programs\noperating on uninitialized or stale data.\n\nFix this by casting size into ssize_t to return the actual negative\nerror code."}], "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": "d6efaa50af62fb0790dd1fd4e7e5506b46312510", "lessThan": "8b85ef0f561039e249c3f883c5280a1449c6dbee", "status": "affected", "versionType": "git"}, {"version": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1", "lessThan": "97be6396817bd3b11d06239010d27902940bfaa9", "status": "affected", "versionType": "git"}, {"version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645", "lessThan": "f9f808227554b2c116fd07dd2328ecd74ea3f411", "status": "affected", "versionType": "git"}, {"version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645", "lessThan": "3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c", "status": "affected", "versionType": "git"}, {"version": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7", "status": "affected", "versionType": "git"}, {"version": "6.12.78", "lessThan": "6.12.113", "status": "affected", "versionType": "semver"}, {"version": "6.18.20", "lessThan": "6.18.56", "status": "affected", "versionType": "semver"}, {"version": "6.19.10", "lessThan": "6.20", "status": "affected", "versionType": "semver"}]}, {"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": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.12.78", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.20", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.10"}]}]}], "references": [{"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"}], "title": "HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hid/bpf/hid_bpf_dispatch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8b85ef0f561039e249c3f883c5280a1449c6dbee", "status": "affected", "version": "d6efaa50af62fb0790dd1fd4e7e5506b46312510", "versionType": "git"}, {"lessThan": "97be6396817bd3b11d06239010d27902940bfaa9", "status": "affected", "version": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1", "versionType": "git"}, {"lessThan": "f9f808227554b2c116fd07dd2328ecd74ea3f411", "status": "affected", "version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645", "versionType": "git"}, {"lessThan": "3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c", "status": "affected", "version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645", "versionType": "git"}, {"status": "affected", "version": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7", "versionType": "git"}, {"lessThan": "6.12.113", "status": "affected", "version": "6.12.78", "versionType": "semver"}, {"lessThan": "6.18.56", "status": "affected", "version": "6.18.20", "versionType": "semver"}, {"lessThan": "6.20", "status": "affected", "version": "6.19.10", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hid/bpf/hid_bpf_dispatch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: bpf: cast size to ssize_t when checking hid_bpf_hw_request\n\nAs reported by Sashiko:\nIf a transport driver encounters a hardware error and returns a negative\nerror code such as -EPIPE, ret is implicitly promoted to size_t when\ncompared against size. This causes the negative error code to evaluate\nas a large positive number, making the (ret > size) condition true.\n\nThis silently converts the hardware error into a success return value\nand copies the unmodified buffer back, which could leave BPF programs\noperating on uninitialized or stale data.\n\nFix this by casting size into ssize_t to return the actual negative\nerror code."}], "id": "CVE-2026-98860", "lastModified": "2026-10-19T10:19:50.087", "metrics": {}, "published": "2026-10-18T16:17:40.470", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b85ef0f561039e249c3f883c5280a1449c6dbee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/97be6396817bd3b11d06239010d27902940bfaa9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9f808227554b2c116fd07dd2328ecd74ea3f411"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request", "id": "2555220", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555220"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.9", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nHID: bpf: cast size to ssize_t when checking hid_bpf_hw_request\nAs reported by Sashiko:\nIf a transport driver encounters a hardware error and returns a negative\nerror code such as -EPIPE, ret is implicitly promoted to size_t when\ncompared against size. This causes the negative error code to evaluate\nas a large positive number, making the (ret > size) condition true.\nThis silently converts the hardware error into a success return value\nand copies the unmodified buffer back, which could leave BPF programs\noperating on uninitialized or stale data.\nFix this by casting size into ssize_t to return the actual negative\nerror code.", "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) 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."], "name": "CVE-2026-98860", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98860\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98860\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98860.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6efaa50af62fb0790dd1fd4e7e5506b46312510,8b85ef0f561039e249c3f883c5280a1449c6dbee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1,97be6396817bd3b11d06239010d27902940bfaa9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b658c1c442ec1cd9eec5ead98d68662c40fe645,f9f808227554b2c116fd07dd2328ecd74ea3f411)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2b658c1c442ec1cd9eec5ead98d68662c40fe645,3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.78,6.12.113)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.20,6.18.56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.19.10,6.20)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T21:30:14.253186+00:00", "updated": "2026-10-24T13:30:08.708372+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-681", "CWE-908"]}