{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98769", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.369Z", "datePublished": "2026-10-18T15:48:04.800Z", "dateUpdated": "2026-10-21T12:56:44.141Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:56:44.141Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd\n\ngeneric_set_cmd() and generic_get_cmd() use the low nibble of\nctrl->bRequest as an index into con->data[]:\n\n u8 cmd = (ctrl->bRequest & 0x0F); /* 0 .. 15 */\n ...\n con->data[cmd] = value; /* OOB when cmd >= 5 */\n\nstruct usb_audio_control (include/linux/usb/audio.h) declares data as\na 5-element array, so indices 5 through 15 write (or read) up to 44\nbytes past the end of the array on the heap.\n\nA malicious USB host can craft a class-specific SET_CUR / GET_CUR\nrequest with an arbitrary bRequest value, triggering the out-of-bounds\naccess from an IRQ completion handler with no further preconditions.\n\nAdd an ARRAY_SIZE() guard to both functions."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_uac1_legacy.c"], "versions": [{"version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "lessThan": "da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e", "status": "affected", "versionType": "git"}, {"version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "lessThan": "36f3f009049bc91e14dc856007932473318d12f8", "status": "affected", "versionType": "git"}, {"version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "lessThan": "8c611876c002d712ae5f246af5188432c708f79d", "status": "affected", "versionType": "git"}, {"version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "lessThan": "697cfe6e53b66cda196d6f8833b0ee97fefd0a8a", "status": "affected", "versionType": "git"}, {"version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "lessThan": "9062d50e75c24dc7911be05c9b1719b3b256af15", "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/usb/gadget/function/f_uac1_legacy.c"], "versions": [{"version": "2.6.31", "status": "affected"}, {"version": "0", "lessThan": "2.6.31", "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": "2.6.31", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e"}, {"url": "https://git.kernel.org/stable/c/36f3f009049bc91e14dc856007932473318d12f8"}, {"url": "https://git.kernel.org/stable/c/8c611876c002d712ae5f246af5188432c708f79d"}, {"url": "https://git.kernel.org/stable/c/697cfe6e53b66cda196d6f8833b0ee97fefd0a8a"}, {"url": "https://git.kernel.org/stable/c/9062d50e75c24dc7911be05c9b1719b3b256af15"}], "title": "usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_uac1_legacy.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e", "status": "affected", "version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "versionType": "git"}, {"lessThan": "36f3f009049bc91e14dc856007932473318d12f8", "status": "affected", "version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "versionType": "git"}, {"lessThan": "8c611876c002d712ae5f246af5188432c708f79d", "status": "affected", "version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "versionType": "git"}, {"lessThan": "697cfe6e53b66cda196d6f8833b0ee97fefd0a8a", "status": "affected", "version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "versionType": "git"}, {"lessThan": "9062d50e75c24dc7911be05c9b1719b3b256af15", "status": "affected", "version": "c47d7b09891abb4f8b222317c89c7469bed8db3a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_uac1_legacy.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"lessThan": "2.6.31", "status": "unaffected", "version": "0", "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\nusb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd\n\ngeneric_set_cmd() and generic_get_cmd() use the low nibble of\nctrl->bRequest as an index into con->data[]:\n\n u8 cmd = (ctrl->bRequest & 0x0F); /* 0 .. 15 */\n ...\n con->data[cmd] = value; /* OOB when cmd >= 5 */\n\nstruct usb_audio_control (include/linux/usb/audio.h) declares data as\na 5-element array, so indices 5 through 15 write (or read) up to 44\nbytes past the end of the array on the heap.\n\nA malicious USB host can craft a class-specific SET_CUR / GET_CUR\nrequest with an arbitrary bRequest value, triggering the out-of-bounds\naccess from an IRQ completion handler with no further preconditions.\n\nAdd an ARRAY_SIZE() guard to both functions."}], "id": "CVE-2026-98769", "lastModified": "2026-10-21T13:21:45.120", "metrics": {}, "published": "2026-10-18T16:17:30.813", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36f3f009049bc91e14dc856007932473318d12f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/697cfe6e53b66cda196d6f8833b0ee97fefd0a8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c611876c002d712ae5f246af5188432c708f79d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9062d50e75c24dc7911be05c9b1719b3b256af15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da841c1511a6160b8bc6bb7b7c6d4c9fb76fb51e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: usb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd", "id": "2555063", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555063"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: gadget: f_uac1_legacy: validate bRequest index in generic_{set,get}_cmd\ngeneric_set_cmd() and generic_get_cmd() use the low nibble of\nctrl->bRequest as an index into con->data[]:\nu8 cmd = (ctrl->bRequest & 0x0F); /* 0 .. 15 */\n...\ncon->data[cmd] = value; /* OOB when cmd >= 5 */\nstruct usb_audio_control (include/linux/usb/audio.h) declares data as\na 5-element array, so indices 5 through 15 write (or read) up to 44\nbytes past the end of the array on the heap.\nA malicious USB host can craft a class-specific SET_CUR / GET_CUR\nrequest with an arbitrary bRequest value, triggering the out-of-bounds\naccess from an IRQ completion handler with no further preconditions.\nAdd an ARRAY_SIZE() guard to both functions.", "A flaw was found in the Linux kernel's Universal Serial Bus (USB) audio gadget driver. A connected USB host can send a specially crafted audio control request with an invalid command index, causing an out-of-bounds heap memory read and write. This flaw primarily allows an attacker to cause a Denial of Service (DoS) via a system crash, or potentially lead to kernel memory corruption."], "name": "CVE-2026-98769", "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-2026-98769\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98769\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98769.mbox"], "threat_severity": "Important"}