CVE-2026-98889

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98889", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.378Z", "datePublished": "2026-10-23T11:37:49.469Z", "dateUpdated": "2026-10-26T06:56:14.362Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-26T06:56:14.362Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: fix sched scan IE sizing\n\nScheduled scan built the probe request before iwl_mvm_scan_fits(),\nso oversized IEs could be copied into the fixed preq buffer before\nlength validation. Move iwl_mvm_build_scan_probe() after the fits\ncheck.\n\nAlso advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len()\nso userspace limits account for driver-inserted DS/TPC bytes."}], "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 - Attacker-controlled bytes enter through NL80211_CMD_START_SCHED_SCAN's NL80211_ATTR_IE, then traverse ieee80211_request_sched_scan_start() to patched iwl_mvm_sched_scan_start() and iwl_mvm_build_scan_probe(); they are not received WiFi frames.\nAC:L - A valid IE stream near the advertised 486-byte limit deterministically overflows because ieee80211_build_preq_ies() adds and can duplicate data per band, while vulnerable iwl_mvm_sched_scan_start() calls iwl_mvm_build_scan_probe() before iwl_mvm_scan_fits(); no race is required.\nPR:L - NL80211_CMD_START_SCHED_SCAN uses GENL_UNS_ADMIN_PERM, which checks CAP_NET_ADMIN in the network namespace's owning user namespace; mac80211 sets WIPHY_FLAG_NETNS_OK, so a wiphy delegated to a user/net namespace is reachable without init-namespace root.\nUI:N - The attacker directly submits the scheduled-scan netlink request against an up, idle interface; no separate victim action is required.\nS:U - The overflow corrupts the host kernel stack inside iwl_mvm_sched_scan_start() and does not cross a VM, IOMMU, or other distinct security authority.\nC:H - The copies can run beyond params.preq.buf through adjacent pointers and beyond the local params object; this attacker-influenced stack corruption can be leveraged for control-flow execution and consequent disclosure of arbitrary kernel memory.\nI:H - iwl_mvm_build_scan_probe() copies attacker-supplied IEs plus per-band generated data into the fixed 512-byte preq.buf without first enforcing iwl_mvm_scan_fits(), producing an attacker-shaped out-of-bounds stack write capable of control-flow hijacking.\nA:H - The overwrite can extend beyond struct iwl_mvm_scan_params into stack control state; stack-protector detection or corrupted return state can oops or panic the kernel."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c", "drivers/net/wireless/intel/iwlwifi/mvm/scan.c"], "versions": [{"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "f2268060e99f94314b9988dfa17393c2694fa9b2", "status": "affected", "versionType": "git"}, {"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "358eca9a898ad4cce7453e9dcfd005d019a2b01f", "status": "affected", "versionType": "git"}, {"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "05f79cea3b15cfe600b205ddcfd51ebee15d908a", "status": "affected", "versionType": "git"}, {"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "a24417478f90e9f1a4ea24cd4b784afccb56fbae", "status": "affected", "versionType": "git"}, {"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "0a63f98e5163a2ec2822dfb691ee5a6094de08ec", "status": "affected", "versionType": "git"}, {"version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "lessThan": "4f155d262b31b9b17e0f9856bdabe0968eb4930f", "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/net/wireless/intel/iwlwifi/mvm/mac80211.c", "drivers/net/wireless/intel/iwlwifi/mvm/scan.c"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "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": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "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": "5.11", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2"}, {"url": "https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f"}, {"url": "https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a"}, {"url": "https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae"}, {"url": "https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec"}, {"url": "https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f"}], "title": "wifi: iwlwifi: mvm: fix sched scan IE sizing", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c", "drivers/net/wireless/intel/iwlwifi/mvm/scan.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f2268060e99f94314b9988dfa17393c2694fa9b2", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}, {"lessThan": "358eca9a898ad4cce7453e9dcfd005d019a2b01f", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}, {"lessThan": "05f79cea3b15cfe600b205ddcfd51ebee15d908a", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}, {"lessThan": "a24417478f90e9f1a4ea24cd4b784afccb56fbae", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}, {"lessThan": "0a63f98e5163a2ec2822dfb691ee5a6094de08ec", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}, {"lessThan": "4f155d262b31b9b17e0f9856bdabe0968eb4930f", "status": "affected", "version": "eae94cf82d7456b57fa9fd55c1edb8a726dcc19c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c", "drivers/net/wireless/intel/iwlwifi/mvm/scan.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.11"}, {"lessThan": "5.11", "status": "unaffected", "version": "0", "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": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nwifi: iwlwifi: mvm: fix sched scan IE sizing\n\nScheduled scan built the probe request before iwl_mvm_scan_fits(),\nso oversized IEs could be copied into the fixed preq buffer before\nlength validation. Move iwl_mvm_build_scan_probe() after the fits\ncheck.\n\nAlso advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len()\nso userspace limits account for driver-inserted DS/TPC bytes."}], "id": "CVE-2026-98889", "lastModified": "2026-10-26T07:17:14.010", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-10-23T12:18:22.717", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: iwlwifi: mvm: fix sched scan IE sizing", "id": "2559561", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559561"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: iwlwifi: mvm: fix sched scan IE sizing\nScheduled scan built the probe request before iwl_mvm_scan_fits(),\nso oversized IEs could be copied into the fixed preq buffer before\nlength validation. Move iwl_mvm_build_scan_probe() after the fits\ncheck.\nAlso advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len()\nso userspace limits account for driver-inserted DS/TPC bytes.", "A flaw was found in the Linux kernel's Intel Wi-Fi driver (iwlwifi). During scheduled network scans, the driver copies Information Elements (IEs)\u2014data fields used in wireless communications\u2014into a fixed-size buffer before validating their length. A local user with network administration privileges can exploit this flaw by submitting oversized scan parameters, causing a buffer overflow. This flaw can lead to a Denial of Service (DoS) by crashing the system or potentially allow arbitrary code execution."], "name": "CVE-2026-98889", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98889\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98889\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98889.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f2268060e99f94314b9988dfa17393c2694fa9b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,358eca9a898ad4cce7453e9dcfd005d019a2b01f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,05f79cea3b15cfe600b205ddcfd51ebee15d908a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a24417478f90e9f1a4ea24cd4b784afccb56fbae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0a63f98e5163a2ec2822dfb691ee5a6094de08ec)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4f155d262b31b9b17e0f9856bdabe0968eb4930f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.15.222)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.1.189)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.158)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.222,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.189,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.158,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.111,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f2268060e99f94314b9988dfa17393c2694fa9b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,358eca9a898ad4cce7453e9dcfd005d019a2b01f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,05f79cea3b15cfe600b205ddcfd51ebee15d908a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a24417478f90e9f1a4ea24cd4b784afccb56fbae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,0a63f98e5163a2ec2822dfb691ee5a6094de08ec)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4f155d262b31b9b17e0f9856bdabe0968eb4930f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.15.222)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.1.189)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.158)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.222,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.189,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.158,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.111,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T14:15:06.651442+00:00", "updated": "2026-10-27T12:15:16.115910+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}