CVE-2026-98703

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98703", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.365Z", "datePublished": "2026-10-18T15:46:33.395Z", "dateUpdated": "2026-10-30T12:38:53.843Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:38:53.843Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: minstrel_ht: validate fixed rate index\n\nThe fixed_rate_idx debugfs file is a plain u32 attribute, so any value\ncan be written to it. minstrel_ht_update_stats() then copies the value\ninto mi->max_tp_rate[] and mi->max_prob_rate, and\nminstrel_ht_set_rate() uses MI_RATE_GROUP()/MI_RATE_IDX() to index\nminstrel_mcs_groups[] (42 entries) and mi->groups[].rates[] (10 entries)\nwith it.\n\nWriting e.g. 65535 selects group 4095 and rate index 15, far outside\nboth arrays. The out-of-bounds entries are dereferenced and updated as\nstruct minstrel_rate_stats (retry counts, etc.), so the invalid index\ncorrupts adjacent kernel memory. With CONFIG_UBSAN_BOUNDS the access is\nreported as an array-index-out-of-bounds in minstrel_ht_set_rate().\n\nOnly a valid group/rate pair, or U32_MAX to disable fixed rate\nprocessing, can be used safely, so reject any other value when the\ndebugfs file is written.\n\nThe file is only reachable through a root-only debugfs mount, so this is\nnot a privilege boundary. The out-of-bounds access is still a bug that\nmust not be reachable through a writable debugfs attribute."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/rc80211_minstrel_ht.c"], "versions": [{"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "63097bf1b7f17f14bd9ffcae6590c63272da8bb0", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "9b685cfb5cc8ed57991b1a956b06c6658d7cf455", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "eebc70f132041b35da9ec74d5d395083125289b2", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "f8ab6ae1fa360b0191252677f41e781dcb0ffe6e", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "42aa9feb27b600809414a3c6b0c650bafba542a9", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "43082d604a9937b94ceb2e484403956d0f363324", "status": "affected", "versionType": "git"}, {"version": "24f7580e852b5472b51eea322bb78454df0054b8", "lessThan": "15fb9e3cea55fbc378261ce35a32b0f8828f0000", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/rc80211_minstrel_ht.c"], "versions": [{"version": "3.1", "status": "affected"}, {"version": "0", "lessThan": "3.1", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "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": "3.1", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/63097bf1b7f17f14bd9ffcae6590c63272da8bb0"}, {"url": "https://git.kernel.org/stable/c/9b685cfb5cc8ed57991b1a956b06c6658d7cf455"}, {"url": "https://git.kernel.org/stable/c/eebc70f132041b35da9ec74d5d395083125289b2"}, {"url": "https://git.kernel.org/stable/c/f8ab6ae1fa360b0191252677f41e781dcb0ffe6e"}, {"url": "https://git.kernel.org/stable/c/42aa9feb27b600809414a3c6b0c650bafba542a9"}, {"url": "https://git.kernel.org/stable/c/43082d604a9937b94ceb2e484403956d0f363324"}, {"url": "https://git.kernel.org/stable/c/15fb9e3cea55fbc378261ce35a32b0f8828f0000"}], "title": "wifi: mac80211: minstrel_ht: validate fixed rate index", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mac80211/rc80211_minstrel_ht.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "63097bf1b7f17f14bd9ffcae6590c63272da8bb0", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "9b685cfb5cc8ed57991b1a956b06c6658d7cf455", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "eebc70f132041b35da9ec74d5d395083125289b2", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "f8ab6ae1fa360b0191252677f41e781dcb0ffe6e", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "42aa9feb27b600809414a3c6b0c650bafba542a9", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "43082d604a9937b94ceb2e484403956d0f363324", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}, {"lessThan": "15fb9e3cea55fbc378261ce35a32b0f8828f0000", "status": "affected", "version": "24f7580e852b5472b51eea322bb78454df0054b8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mac80211/rc80211_minstrel_ht.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.1"}, {"lessThan": "3.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "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\nwifi: mac80211: minstrel_ht: validate fixed rate index\n\nThe fixed_rate_idx debugfs file is a plain u32 attribute, so any value\ncan be written to it. minstrel_ht_update_stats() then copies the value\ninto mi->max_tp_rate[] and mi->max_prob_rate, and\nminstrel_ht_set_rate() uses MI_RATE_GROUP()/MI_RATE_IDX() to index\nminstrel_mcs_groups[] (42 entries) and mi->groups[].rates[] (10 entries)\nwith it.\n\nWriting e.g. 65535 selects group 4095 and rate index 15, far outside\nboth arrays. The out-of-bounds entries are dereferenced and updated as\nstruct minstrel_rate_stats (retry counts, etc.), so the invalid index\ncorrupts adjacent kernel memory. With CONFIG_UBSAN_BOUNDS the access is\nreported as an array-index-out-of-bounds in minstrel_ht_set_rate().\n\nOnly a valid group/rate pair, or U32_MAX to disable fixed rate\nprocessing, can be used safely, so reject any other value when the\ndebugfs file is written.\n\nThe file is only reachable through a root-only debugfs mount, so this is\nnot a privilege boundary. The out-of-bounds access is still a bug that\nmust not be reachable through a writable debugfs attribute."}], "id": "CVE-2026-98703", "lastModified": "2026-10-30T13:21:19.460", "metrics": {}, "published": "2026-10-18T16:17:23.810", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/15fb9e3cea55fbc378261ce35a32b0f8828f0000"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/42aa9feb27b600809414a3c6b0c650bafba542a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/43082d604a9937b94ceb2e484403956d0f363324"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/63097bf1b7f17f14bd9ffcae6590c63272da8bb0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b685cfb5cc8ed57991b1a956b06c6658d7cf455"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eebc70f132041b35da9ec74d5d395083125289b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f8ab6ae1fa360b0191252677f41e781dcb0ffe6e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mac80211: minstrel_ht: validate fixed rate index", "id": "2555055", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555055"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's mac80211 wireless subsystem. A local privileged user can cause a Denial of Service (DoS) by writing an invalid index value to the fixed-rate debugfs (debug filesystem) interface. Due to missing input validation, the kernel uses the value to access data outside array boundaries, corrupting adjacent kernel memory and causing a system crash."], "name": "CVE-2026-98703", "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-2026-98703\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98703\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98703.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24f7580e852b5472b51eea322bb78454df0054b8,f8ab6ae1fa360b0191252677f41e781dcb0ffe6e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24f7580e852b5472b51eea322bb78454df0054b8,42aa9feb27b600809414a3c6b0c650bafba542a9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24f7580e852b5472b51eea322bb78454df0054b8,43082d604a9937b94ceb2e484403956d0f363324)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24f7580e852b5472b51eea322bb78454df0054b8,15fb9e3cea55fbc378261ce35a32b0f8828f0000)"}}], "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": "3.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc6,*]"}}], "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": "2026-10-18T22:15:14.439400+00:00", "updated": "2026-10-23T05:15:14.412060+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}