CVE-2026-93280

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93280", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.098Z", "datePublished": "2026-09-24T15:52:22.253Z", "dateUpdated": "2026-10-19T09:08:34.610Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:34.610Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\n\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The malformed bytes are size_dais/size_controls/size_widgets in the GB_AUDIO_TYPE_GET_TOPOLOGY response that gb_audio_probe() fetches via gb_audio_gb_get_topology()\u2192gb_operation_sync(); on BeaglePlay that Greybus payload is delivered by hdlc_rx_greybus_frame() from the CC1352 802.15.4 SVC, so a radio-range module supplies the blob, not a routable IP peer.\nAC:L - A module that returns a small GET_TOPOLOGY_SIZE and then oversized le32 size_* fields makes gbaudio_tplg_process_header() compute control_offset/widget_offset past the kzalloc() blob on every gb_audio_probe(); the attacker fully controls those fields and no race or uninfluenced host state is required.\nPR:N - gb_svc_process_module_inserted()\u2192gb_module_add()\u2192gb_interface_enable()\u2192greybus_probe()\u2192gb_audio_probe() runs with no capable() or host-uid check, and CAP authentication is a separate optional ioctl, not a gate on this path; the attacking module needs no Linux account.\nUI:N - gb_audio_probe() itself calls gb_audio_gb_get_topology() and gbaudio_tplg_parse_data() as soon as a GREYBUS_CLASS_AUDIO bundle is registered; no victim ioctl, ALSA open, or mount is required.\nS:U - The over-read and snprintf() stores corrupt the host kernel topology allocation and adjacent slab inside the same kernel authority; this is not a KVM/Xen guest-to-host escape or an IOMMU/DMA bypass.\nC:H - gbaudio_tplg_process_kcontrols() and gbaudio_tplg_create_widget() read gb_audio_control/widget fields from the OOB offset, and gb_generate_enum_strings() walks names with an unbounded while (*data != '\\0') past the blob, disclosing adjacent kernel heap (and those strings can later appear as ALSA enum names).\nI:H - With curr/w pointing past the topology object, snprintf(curr->name, sizeof(curr->name), \"GB %d %s\", ...) in gbaudio_tplg_process_kcontrols() and snprintf(w->name, ...) in gbaudio_tplg_create_widget() perform 32-byte out-of-bounds writes at an attacker-chosen size_dais+size_controls offset, a heap write primitive.\nA:H - Walking those OOB control/widget pointers and the unbounded enum-name scan can fault on an unmapped page during gb_audio_probe() and oops the kernel; the module can re-insert to repeat it."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/staging/greybus/audio_gb.c"], "versions": [{"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "dd5593aee0a0fb353e1164aff7b65e563fe1f232", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "6f764363b3173d805be11e59a8f23ecee2d420d5", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "52daf9de692ebac813d110eb1e677dc0e1f4a5ab", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "d0f6eaba60705bacd9bb4ce48eab50ef3f546777", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "c9191f2e2f35f1209eb2dc24b31129dd47b48c16", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "cfcc5a41a9664eb68023aae4cd0d485b256bd7c7", "status": "affected", "versionType": "git"}, {"version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "lessThan": "33d8c7b794d2a30637c9d3fcb478f1d3222bef1e", "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/staging/greybus/audio_gb.c"], "versions": [{"version": "4.9", "status": "affected"}, {"version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "4.9", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e"}, {"url": "https://git.kernel.org/stable/c/dd5593aee0a0fb353e1164aff7b65e563fe1f232"}, {"url": "https://git.kernel.org/stable/c/6f764363b3173d805be11e59a8f23ecee2d420d5"}, {"url": "https://git.kernel.org/stable/c/52daf9de692ebac813d110eb1e677dc0e1f4a5ab"}, {"url": "https://git.kernel.org/stable/c/d0f6eaba60705bacd9bb4ce48eab50ef3f546777"}, {"url": "https://git.kernel.org/stable/c/c9191f2e2f35f1209eb2dc24b31129dd47b48c16"}, {"url": "https://git.kernel.org/stable/c/cfcc5a41a9664eb68023aae4cd0d485b256bd7c7"}, {"url": "https://git.kernel.org/stable/c/33d8c7b794d2a30637c9d3fcb478f1d3222bef1e"}], "title": "greybus: audio: bound the topology section sizes against the fetched size", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/staging/greybus/audio_gb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "dd5593aee0a0fb353e1164aff7b65e563fe1f232", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "6f764363b3173d805be11e59a8f23ecee2d420d5", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "52daf9de692ebac813d110eb1e677dc0e1f4a5ab", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "d0f6eaba60705bacd9bb4ce48eab50ef3f546777", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "c9191f2e2f35f1209eb2dc24b31129dd47b48c16", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "cfcc5a41a9664eb68023aae4cd0d485b256bd7c7", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}, {"lessThan": "33d8c7b794d2a30637c9d3fcb478f1d3222bef1e", "status": "affected", "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/staging/greybus/audio_gb.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": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\n\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed."}], "id": "CVE-2026-93280", "lastModified": "2026-10-19T10:17:19.560", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-24T16:17:25.290", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/33d8c7b794d2a30637c9d3fcb478f1d3222bef1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/52daf9de692ebac813d110eb1e677dc0e1f4a5ab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6f764363b3173d805be11e59a8f23ecee2d420d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c9191f2e2f35f1209eb2dc24b31129dd47b48c16"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cfcc5a41a9664eb68023aae4cd0d485b256bd7c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0f6eaba60705bacd9bb4ce48eab50ef3f546777"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd5593aee0a0fb353e1164aff7b65e563fe1f232"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: greybus: audio: bound the topology section sizes against the fetched size", "id": "2540309", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540309"}, "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:\ngreybus: audio: bound the topology section sizes against the fetched size\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed.", "A flaw was found in the Linux kernel's Greybus audio subsystem. An attacker connecting a malicious Greybus device can trigger a Denial of Service (DoS) or unauthorized information disclosure by providing a crafted audio topology descriptor. Because the driver fails to verify that internal section sizes fit within the allocated buffer, parsing the descriptor leads to an out-of-bounds read."], "name": "CVE-2026-93280", "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": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93280\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93280\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93280.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,dd5593aee0a0fb353e1164aff7b65e563fe1f232)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,6f764363b3173d805be11e59a8f23ecee2d420d5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,52daf9de692ebac813d110eb1e677dc0e1f4a5ab)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,d0f6eaba60705bacd9bb4ce48eab50ef3f546777)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,c9191f2e2f35f1209eb2dc24b31129dd47b48c16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,cfcc5a41a9664eb68023aae4cd0d485b256bd7c7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[184992e305f1de3a3d5fa446da3a2bc76be7c54a,33d8c7b794d2a30637c9d3fcb478f1d3222bef1e)"}}], "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": "4.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.270,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.221,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "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": "2026-09-25T05:00:09.767484+00:00", "updated": "2026-10-01T19:00:16.385923+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}