{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93791", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-18T17:59:28.788Z", "datePublished": "2026-09-24T16:02:24.968Z", "dateUpdated": "2026-10-03T10:57:26.936Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:57:26.936Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: add a check on the tid coming from the firmware\n\nba_notif->tid is a firmware-controlled u8 that is used directly\nas an array index into tid_data[] without any validation. Add a\nbounds check against IWL_MAX_TID_COUNT before dereferencing the\narray."}], "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/tx.c"], "versions": [{"version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "lessThan": "0f690fd3b5535d110898b99ae6214f29c9060941", "status": "affected", "versionType": "git"}, {"version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "lessThan": "0b5325a0771674f1d65618de7db3df9d49186a12", "status": "affected", "versionType": "git"}, {"version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "lessThan": "59f64c2839022f41a7867b38f9e38c185ff39283", "status": "affected", "versionType": "git"}, {"version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "lessThan": "0e4c0d83267261cf67ec9690856edf4a56bb7dfc", "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/tx.c"], "versions": [{"version": "4.9", "status": "affected"}, {"version": "0", "lessThan": "4.9", "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": "4.9", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0f690fd3b5535d110898b99ae6214f29c9060941"}, {"url": "https://git.kernel.org/stable/c/0b5325a0771674f1d65618de7db3df9d49186a12"}, {"url": "https://git.kernel.org/stable/c/59f64c2839022f41a7867b38f9e38c185ff39283"}, {"url": "https://git.kernel.org/stable/c/0e4c0d83267261cf67ec9690856edf4a56bb7dfc"}], "title": "wifi: iwlwifi: mvm: add a check on the tid coming from the firmware", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/mvm/tx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0f690fd3b5535d110898b99ae6214f29c9060941", "status": "affected", "version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "versionType": "git"}, {"lessThan": "0b5325a0771674f1d65618de7db3df9d49186a12", "status": "affected", "version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "versionType": "git"}, {"lessThan": "59f64c2839022f41a7867b38f9e38c185ff39283", "status": "affected", "version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "versionType": "git"}, {"lessThan": "0e4c0d83267261cf67ec9690856edf4a56bb7dfc", "status": "affected", "version": "c46e7724bfe9bbff17bc468903a757248b99e4ed", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/mvm/tx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.9"}, {"lessThan": "4.9", "status": "unaffected", "version": "0", "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: add a check on the tid coming from the firmware\n\nba_notif->tid is a firmware-controlled u8 that is used directly\nas an array index into tid_data[] without any validation. Add a\nbounds check against IWL_MAX_TID_COUNT before dereferencing the\narray."}], "id": "CVE-2026-93791", "lastModified": "2026-10-03T11:17:48.800", "metrics": {}, "published": "2026-09-24T17:17:11.820", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b5325a0771674f1d65618de7db3df9d49186a12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e4c0d83267261cf67ec9690856edf4a56bb7dfc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f690fd3b5535d110898b99ae6214f29c9060941"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/59f64c2839022f41a7867b38f9e38c185ff39283"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware", "id": "2540505", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540505"}, "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-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: iwlwifi: mvm: add a check on the tid coming from the firmware\nba_notif->tid is a firmware-controlled u8 that is used directly\nas an array index into tid_data[] without any validation. Add a\nbounds check against IWL_MAX_TID_COUNT before dereferencing the\narray.", "A flaw was found in the Linux kernel's iwlwifi wireless driver. This vulnerability can lead to a Denial of Service (DoS) or kernel memory corruption due to an out-of-bounds memory access. When handling block acknowledgment notifications, the driver directly uses a traffic identifier (TID) provided by the device firmware as an array index without bounds validation. A compromised or malicious Wi-Fi firmware could send an invalid identifier, causing an out-of-bounds read or write that crashes the system."], "name": "CVE-2026-93791", "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": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93791\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93791\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93791.mbox"], "threat_severity": "Moderate"}

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