CVE-2026-93789

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93789", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-18T17:59:28.788Z", "datePublished": "2026-09-24T16:02:23.252Z", "dateUpdated": "2026-10-03T10:57:24.712Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:57:24.712Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: bound aligned TLV advance in FW parser\n\nValidate ALIGN(tlv_len, 4) against remaining parser length before\nconsuming bytes from the firmware image.\n\nThis avoids length underflow on malformed TLVs."}], "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/iwl-drv.c"], "versions": [{"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "61da42fdd21d98ccb8f1ec5224659f3d09202cf4", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "8c332d45b736d41301b7e07f322785d821265dbc", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "ce709fcab5e1d4df6d4ba980736dc5908502a40f", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "4cfadb2e01566bc36d42922fbe18838345087050", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "528fa9eb14c209533ca26958b76da55e0ce239d8", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "7aa9097623afb694bc25382a62e14d8e82bf002f", "status": "affected", "versionType": "git"}, {"version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "lessThan": "acad742714bdc70e7fd7f234323807c596828213", "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/iwl-drv.c"], "versions": [{"version": "2.6.35", "status": "affected"}, {"version": "0", "lessThan": "2.6.35", "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": "6.12.111", "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": "2.6.35", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/61da42fdd21d98ccb8f1ec5224659f3d09202cf4"}, {"url": "https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc"}, {"url": "https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f"}, {"url": "https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050"}, {"url": "https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8"}, {"url": "https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f"}, {"url": "https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213"}], "title": "wifi: iwlwifi: bound aligned TLV advance in FW parser", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/iwl-drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "61da42fdd21d98ccb8f1ec5224659f3d09202cf4", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "8c332d45b736d41301b7e07f322785d821265dbc", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "ce709fcab5e1d4df6d4ba980736dc5908502a40f", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "4cfadb2e01566bc36d42922fbe18838345087050", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "528fa9eb14c209533ca26958b76da55e0ce239d8", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "7aa9097623afb694bc25382a62e14d8e82bf002f", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}, {"lessThan": "acad742714bdc70e7fd7f234323807c596828213", "status": "affected", "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/iwl-drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.35"}, {"lessThan": "2.6.35", "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": "6.12.111", "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: bound aligned TLV advance in FW parser\n\nValidate ALIGN(tlv_len, 4) against remaining parser length before\nconsuming bytes from the firmware image.\n\nThis avoids length underflow on malformed TLVs."}], "id": "CVE-2026-93789", "lastModified": "2026-10-03T11:17:48.563", "metrics": {}, "published": "2026-09-24T17:17:11.593", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61da42fdd21d98ccb8f1ec5224659f3d09202cf4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: iwlwifi: bound aligned TLV advance in FW parser", "id": "2540405", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540405"}, "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-191", "details": ["A flaw was found in the Linux kernel's iwlwifi driver. This vulnerability allows a local user capable of loading custom firmware to cause a Denial of Service (DoS) through a system crash. The issue stems from insufficient bounds checking when parsing aligned Type-Length-Value (TLV) data blocks within firmware images. By supplying a crafted firmware file, an attacker can trigger an integer underflow, leading to out-of-bounds memory reads."], "name": "CVE-2026-93789", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93789\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93789\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93789.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,528fa9eb14c209533ca26958b76da55e0ce239d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,7aa9097623afb694bc25382a62e14d8e82bf002f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,acad742714bdc70e7fd7f234323807c596828213)"}}, {"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": 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": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-09-24T21:00:17.282453+00:00", "updated": "2026-09-28T16:30:03.681225+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}