CVE-2026-98201

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98201", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.324Z", "datePublished": "2026-10-06T08:44:38.952Z", "dateUpdated": "2026-10-19T09:15:32.269Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:15:32.269Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\n\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\n\n\tcompat_effect = (struct ff_effect_compat *)effect;\n\n\tif (copy_from_user(compat_effect, buffer,\n\t\t\t sizeof(struct ff_effect_compat)))\n\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\n\nZero the effect before the compat copy."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/input/input-compat.c"], "versions": [{"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "ed0905fda39682d3da7937184397d3276abbffa8", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "ec174c2ab1abb76b20fa167c6db848c3d97aa838", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "6c26681c5668c973bd0e951407d670ac60d9cd66", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "c5e573bb095d502be7cbbaa99c26a20984111c6d", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "b878720e8bcaa4cf7163a5081f904dd6baf11b2c", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "0d05b43b55d4784a42ce8fb318175f8ad7d9af5a", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "ed0406e490f48ed180df140fe2a81be26bccb1a9", "status": "affected", "versionType": "git"}, {"version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "lessThan": "f84819ef8d66931ee3998fee3c4f03230f4cb6cc", "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/input/input-compat.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "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": "2.6.29", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ed0905fda39682d3da7937184397d3276abbffa8"}, {"url": "https://git.kernel.org/stable/c/ec174c2ab1abb76b20fa167c6db848c3d97aa838"}, {"url": "https://git.kernel.org/stable/c/6c26681c5668c973bd0e951407d670ac60d9cd66"}, {"url": "https://git.kernel.org/stable/c/c5e573bb095d502be7cbbaa99c26a20984111c6d"}, {"url": "https://git.kernel.org/stable/c/b878720e8bcaa4cf7163a5081f904dd6baf11b2c"}, {"url": "https://git.kernel.org/stable/c/0d05b43b55d4784a42ce8fb318175f8ad7d9af5a"}, {"url": "https://git.kernel.org/stable/c/ed0406e490f48ed180df140fe2a81be26bccb1a9"}, {"url": "https://git.kernel.org/stable/c/f84819ef8d66931ee3998fee3c4f03230f4cb6cc"}], "title": "Input: zero ff_effect before compat copy in input_ff_effect_from_user", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/input/input-compat.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ed0905fda39682d3da7937184397d3276abbffa8", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "ec174c2ab1abb76b20fa167c6db848c3d97aa838", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "6c26681c5668c973bd0e951407d670ac60d9cd66", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "c5e573bb095d502be7cbbaa99c26a20984111c6d", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "b878720e8bcaa4cf7163a5081f904dd6baf11b2c", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "0d05b43b55d4784a42ce8fb318175f8ad7d9af5a", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "ed0406e490f48ed180df140fe2a81be26bccb1a9", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}, {"lessThan": "f84819ef8d66931ee3998fee3c4f03230f4cb6cc", "status": "affected", "version": "2d56f3a32c0e62f99c043d2579840f9731fe5855", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/input/input-compat.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"lessThan": "2.6.29", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "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\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\n\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\n\n\tcompat_effect = (struct ff_effect_compat *)effect;\n\n\tif (copy_from_user(compat_effect, buffer,\n\t\t\t sizeof(struct ff_effect_compat)))\n\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\n\nZero the effect before the compat copy."}], "id": "CVE-2026-98201", "lastModified": "2026-10-19T10:18:20.737", "metrics": {}, "published": "2026-10-06T09:18:05.900", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d05b43b55d4784a42ce8fb318175f8ad7d9af5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c26681c5668c973bd0e951407d670ac60d9cd66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b878720e8bcaa4cf7163a5081f904dd6baf11b2c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5e573bb095d502be7cbbaa99c26a20984111c6d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec174c2ab1abb76b20fa167c6db848c3d97aa838"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ed0406e490f48ed180df140fe2a81be26bccb1a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ed0905fda39682d3da7937184397d3276abbffa8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f84819ef8d66931ee3998fee3c4f03230f4cb6cc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Input: zero ff_effect before compat copy in input_ff_effect_from_user", "id": "2546542", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546542"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nInput: zero ff_effect before compat copy in input_ff_effect_from_user\nIn the compat path input_ff_effect_from_user() aliases the caller's\nnative struct ff_effect with the smaller struct ff_effect_compat and\ncopies only the compat sized prefix:\ncompat_effect = (struct ff_effect_compat *)effect;\nif (copy_from_user(compat_effect, buffer,\nsizeof(struct ff_effect_compat)))\nThe tail of the native structure is never written. Callers pass an\nuninitialized on-stack object, for example evdev_do_ioctl() for\nEVIOCSFF, so those bytes keep their previous stack contents.\ninput_ff_upload() then stores the full native structure in\nff->effects[id], from where a uinput based force feedback daemon can\nread it back via UI_BEGIN_FF_UPLOAD, disclosing kernel stack memory to\nuserspace.\nZero the effect before the compat copy.", "A flaw was found in the Linux kernel's input subsystem. When handling 32-bit compatibility requests for force feedback input effects, the kernel fails to properly initialize memory buffers before copying data from user space. A local user can exploit this vulnerability to read uninitialized kernel stack data, leading to information disclosure of potentially sensitive system memory."], "name": "CVE-2026-98201", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98201\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98201\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98201.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,ed0905fda39682d3da7937184397d3276abbffa8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,ec174c2ab1abb76b20fa167c6db848c3d97aa838)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,6c26681c5668c973bd0e951407d670ac60d9cd66)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,c5e573bb095d502be7cbbaa99c26a20984111c6d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,b878720e8bcaa4cf7163a5081f904dd6baf11b2c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,0d05b43b55d4784a42ce8fb318175f8ad7d9af5a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,ed0406e490f48ed180df140fe2a81be26bccb1a9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d56f3a32c0e62f99c043d2579840f9731fe5855,f84819ef8d66931ee3998fee3c4f03230f4cb6cc)"}}], "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": "semver", "value": "2.6.29"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.29)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc4,*]"}}], "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": "2026-10-06T15:00:18.392012+00:00", "updated": "2026-10-09T15:45:07.581666+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}