CVE-2026-98566

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98566", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.357Z", "datePublished": "2026-10-18T15:18:32.679Z", "dateUpdated": "2026-10-19T09:21:51.721Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:21:51.721Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: clamp freelist reconstruction requests\n\nThe firmware reconstruction count controls accesses to the request's\nfixed freelist ID array and the copy into the fixed response array.\nNeither access currently bounds the count to those protocol arrays.\n\nClamp the count to the request capacity, which is shared by the response\nlayout, and use that count consistently for reconstruction and response\npublication. Keep the firmware recovery exchange instead of dropping an\noversized request without a response, as discussed with the firmware\nmaintainer.\n\nThe issue was found by our static-analysis tool."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/imagination/pvr_free_list.c"], "versions": [{"version": "6eedddab733b350886571f98b810108b13bf74ae", "lessThan": "b78f8f5532a077baa4aabccf657a4fb3b164659e", "status": "affected", "versionType": "git"}, {"version": "6eedddab733b350886571f98b810108b13bf74ae", "lessThan": "e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6", "status": "affected", "versionType": "git"}, {"version": "6eedddab733b350886571f98b810108b13bf74ae", "lessThan": "eabd0ae3611769c826dbc118a1e240628731b348", "status": "affected", "versionType": "git"}, {"version": "6eedddab733b350886571f98b810108b13bf74ae", "lessThan": "45585c3aa285854face65293acc95eff73063d6d", "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/gpu/drm/imagination/pvr_free_list.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "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": "6.8", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b78f8f5532a077baa4aabccf657a4fb3b164659e"}, {"url": "https://git.kernel.org/stable/c/e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6"}, {"url": "https://git.kernel.org/stable/c/eabd0ae3611769c826dbc118a1e240628731b348"}, {"url": "https://git.kernel.org/stable/c/45585c3aa285854face65293acc95eff73063d6d"}], "title": "drm/imagination: clamp freelist reconstruction requests", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/imagination/pvr_free_list.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b78f8f5532a077baa4aabccf657a4fb3b164659e", "status": "affected", "version": "6eedddab733b350886571f98b810108b13bf74ae", "versionType": "git"}, {"lessThan": "e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6", "status": "affected", "version": "6eedddab733b350886571f98b810108b13bf74ae", "versionType": "git"}, {"lessThan": "eabd0ae3611769c826dbc118a1e240628731b348", "status": "affected", "version": "6eedddab733b350886571f98b810108b13bf74ae", "versionType": "git"}, {"lessThan": "45585c3aa285854face65293acc95eff73063d6d", "status": "affected", "version": "6eedddab733b350886571f98b810108b13bf74ae", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/imagination/pvr_free_list.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "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\ndrm/imagination: clamp freelist reconstruction requests\n\nThe firmware reconstruction count controls accesses to the request's\nfixed freelist ID array and the copy into the fixed response array.\nNeither access currently bounds the count to those protocol arrays.\n\nClamp the count to the request capacity, which is shared by the response\nlayout, and use that count consistently for reconstruction and response\npublication. Keep the firmware recovery exchange instead of dropping an\noversized request without a response, as discussed with the firmware\nmaintainer.\n\nThe issue was found by our static-analysis tool."}], "id": "CVE-2026-98566", "lastModified": "2026-10-19T10:19:14.463", "metrics": {}, "published": "2026-10-18T16:17:08.767", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/45585c3aa285854face65293acc95eff73063d6d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b78f8f5532a077baa4aabccf657a4fb3b164659e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eabd0ae3611769c826dbc118a1e240628731b348"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: drm/imagination: clamp freelist reconstruction requests", "id": "2554957", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554957"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/imagination: clamp freelist reconstruction requests\nThe firmware reconstruction count controls accesses to the request's\nfixed freelist ID array and the copy into the fixed response array.\nNeither access currently bounds the count to those protocol arrays.\nClamp the count to the request capacity, which is shared by the response\nlayout, and use that count consistently for reconstruction and response\npublication. Keep the firmware recovery exchange instead of dropping an\noversized request without a response, as discussed with the firmware\nmaintainer.\nThe issue was found by our static-analysis tool.", "A flaw was found in the Linux kernel's drm/imagination GPU driver. The driver fails to properly validate and bound the firmware reconstruction count against the fixed protocol array capacity when processing freelist reconstruction requests. A local attacker could exploit this vulnerability by submitting oversized reconstruction requests, causing out-of-bounds memory access that may lead to memory corruption or a Denial of Service (DoS) via a system crash."], "name": "CVE-2026-98566", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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-2026-98566\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98566\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98566.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eedddab733b350886571f98b810108b13bf74ae,b78f8f5532a077baa4aabccf657a4fb3b164659e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eedddab733b350886571f98b810108b13bf74ae,e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eedddab733b350886571f98b810108b13bf74ae,eabd0ae3611769c826dbc118a1e240628731b348)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eedddab733b350886571f98b810108b13bf74ae,45585c3aa285854face65293acc95eff73063d6d)"}}], "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": "6.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc5,*]"}}], "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": "2026-10-18T23:15:14.330355+00:00", "updated": "2026-10-22T22:00:15.043183+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}