CVE-2026-80973

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80973", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.810Z", "datePublished": "2026-09-11T19:42:35.751Z", "dateUpdated": "2026-10-19T08:45:57.889Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:45:57.889Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: 6fire: bound the MIDI event length from the device\n\nusb6fire_comm_receiver_handler() forwards a MIDI event using a length\nbyte the device supplies, with no bound and no check that the transfer\ndelivered that many bytes:\n\n\tif (!urb->status) {\n\t\tif (rt->receiver_buffer[0] == 0x10) /* midi in event */\n\t\t\tif (midi_rt)\n\t\t\t\tmidi_rt->in_received(midi_rt,\n\t\t\t\t\t\trt->receiver_buffer + 2,\n\t\t\t\t\t\trt->receiver_buffer[1]);\n\t}\n\nreceiver_buffer is a 64-byte kzalloc() buffer (COMM_RECEIVER_BUFSIZE), so\nonly 62 bytes follow the two-byte header. receiver_buffer[1] is a u8 the\ndevice chooses, so a device that answers with 0x10 and a length of 0xFF\nmakes snd_rawmidi_receive() read 255 bytes starting two bytes into a\n64-byte object. The bytes past the buffer are handed to userspace\nthrough the rawmidi read path.\n\nurb->actual_length is not consulted either, so a short transfer leaves\nboth the type byte and the length byte at their previous values and the\nhandler acts on stale data.\n\nThe receiver URB is submitted from usb6fire_comm_init() at probe, so the\nread happens on plug with no user action; forwarding to userspace also\nneeds a MIDI input substream open, since usb6fire_midi_in_received()\nonly calls snd_rawmidi_receive() when rt->in is set.\n\nKASAN on 7.2.0-rc5 (arm64), single packet from an emulated device:\n\n BUG: KASAN: slab-out-of-bounds in snd_rawmidi_receive\n Read of size 255 at addr ffff000009f64682 by task bash/183\n __asan_memcpy\n snd_rawmidi_receive\n usb6fire_midi_in_received [snd_usb_6fire]\n usb6fire_comm_receiver_handler [snd_usb_6fire]\n Allocated by task 11:\n usb6fire_comm_init [snd_usb_6fire]\n usb6fire_chip_probe [snd_usb_6fire]\n The buggy address is located 2 bytes inside of\n allocated 64-byte region [ffff000009f64680, ffff000009f646c0)\n\nReject the event when the length exceeds the bytes that follow the\nheader, and require the transfer to have delivered the header plus that\nmany bytes. The receiver URB is submitted with a 64-byte\ntransfer_buffer_length, so a genuine device cannot deliver an event\nlonger than those 62 bytes and nothing valid is dropped.\n\nDiscovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/usb/6fire/comm.c"], "versions": [{"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "c9204bc2ed2010e2469dbe5fce598878a37efd04", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "2c590d5e1b1595d5c8fa0b72d2897423ce9985ca", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "0c8a3c773823cf12abd39c480aed70e25c384630", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "00e84a9ff2d43953ae261995cae94d46f4c307a6", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "466e911bbbbb779bb06337e35a286e5ca7af16b3", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "34816e2cfeabafb8eccf54687186ce25699e8363", "status": "affected", "versionType": "git"}, {"version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "lessThan": "a478893b59e36cfe7d77a76b352f2db55502e879", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/usb/6fire/comm.c"], "versions": [{"version": "2.6.39", "status": "affected"}, {"version": "0", "lessThan": "2.6.39", "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": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "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": "2.6.39", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c9204bc2ed2010e2469dbe5fce598878a37efd04"}, {"url": "https://git.kernel.org/stable/c/2c590d5e1b1595d5c8fa0b72d2897423ce9985ca"}, {"url": "https://git.kernel.org/stable/c/0c8a3c773823cf12abd39c480aed70e25c384630"}, {"url": "https://git.kernel.org/stable/c/00e84a9ff2d43953ae261995cae94d46f4c307a6"}, {"url": "https://git.kernel.org/stable/c/466e911bbbbb779bb06337e35a286e5ca7af16b3"}, {"url": "https://git.kernel.org/stable/c/2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5"}, {"url": "https://git.kernel.org/stable/c/34816e2cfeabafb8eccf54687186ce25699e8363"}, {"url": "https://git.kernel.org/stable/c/a478893b59e36cfe7d77a76b352f2db55502e879"}], "title": "ALSA: 6fire: bound the MIDI event length from the device", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["sound/usb/6fire/comm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c9204bc2ed2010e2469dbe5fce598878a37efd04", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "2c590d5e1b1595d5c8fa0b72d2897423ce9985ca", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "0c8a3c773823cf12abd39c480aed70e25c384630", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "00e84a9ff2d43953ae261995cae94d46f4c307a6", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "466e911bbbbb779bb06337e35a286e5ca7af16b3", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "34816e2cfeabafb8eccf54687186ce25699e8363", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}, {"lessThan": "a478893b59e36cfe7d77a76b352f2db55502e879", "status": "affected", "version": "c6d43ba816d1cf1d125bfbfc938f2a28a87facf9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["sound/usb/6fire/comm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.39"}, {"lessThan": "2.6.39", "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": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "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\nALSA: 6fire: bound the MIDI event length from the device\n\nusb6fire_comm_receiver_handler() forwards a MIDI event using a length\nbyte the device supplies, with no bound and no check that the transfer\ndelivered that many bytes:\n\n\tif (!urb->status) {\n\t\tif (rt->receiver_buffer[0] == 0x10) /* midi in event */\n\t\t\tif (midi_rt)\n\t\t\t\tmidi_rt->in_received(midi_rt,\n\t\t\t\t\t\trt->receiver_buffer + 2,\n\t\t\t\t\t\trt->receiver_buffer[1]);\n\t}\n\nreceiver_buffer is a 64-byte kzalloc() buffer (COMM_RECEIVER_BUFSIZE), so\nonly 62 bytes follow the two-byte header. receiver_buffer[1] is a u8 the\ndevice chooses, so a device that answers with 0x10 and a length of 0xFF\nmakes snd_rawmidi_receive() read 255 bytes starting two bytes into a\n64-byte object. The bytes past the buffer are handed to userspace\nthrough the rawmidi read path.\n\nurb->actual_length is not consulted either, so a short transfer leaves\nboth the type byte and the length byte at their previous values and the\nhandler acts on stale data.\n\nThe receiver URB is submitted from usb6fire_comm_init() at probe, so the\nread happens on plug with no user action; forwarding to userspace also\nneeds a MIDI input substream open, since usb6fire_midi_in_received()\nonly calls snd_rawmidi_receive() when rt->in is set.\n\nKASAN on 7.2.0-rc5 (arm64), single packet from an emulated device:\n\n BUG: KASAN: slab-out-of-bounds in snd_rawmidi_receive\n Read of size 255 at addr ffff000009f64682 by task bash/183\n __asan_memcpy\n snd_rawmidi_receive\n usb6fire_midi_in_received [snd_usb_6fire]\n usb6fire_comm_receiver_handler [snd_usb_6fire]\n Allocated by task 11:\n usb6fire_comm_init [snd_usb_6fire]\n usb6fire_chip_probe [snd_usb_6fire]\n The buggy address is located 2 bytes inside of\n allocated 64-byte region [ffff000009f64680, ffff000009f646c0)\n\nReject the event when the length exceeds the bytes that follow the\nheader, and require the transfer to have delivered the header plus that\nmany bytes. The receiver URB is submitted with a 64-byte\ntransfer_buffer_length, so a genuine device cannot deliver an event\nlonger than those 62 bytes and nothing valid is dropped.\n\nDiscovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>"}], "id": "CVE-2026-80973", "lastModified": "2026-10-19T09:17:29.270", "metrics": {}, "published": "2026-09-11T20:19:03.490", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00e84a9ff2d43953ae261995cae94d46f4c307a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c8a3c773823cf12abd39c480aed70e25c384630"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c590d5e1b1595d5c8fa0b72d2897423ce9985ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/34816e2cfeabafb8eccf54687186ce25699e8363"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/466e911bbbbb779bb06337e35a286e5ca7af16b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a478893b59e36cfe7d77a76b352f2db55502e879"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c9204bc2ed2010e2469dbe5fce598878a37efd04"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel ALSA 6fire: Information disclosure via out-of-bounds read in MIDI event handling", "id": "2532036", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532036"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) subsystem, specifically within the 6fire driver. This vulnerability allows a malicious USB device to trigger an out-of-bounds read by sending a specially crafted MIDI event with an excessive length. This can lead to the disclosure of sensitive information from kernel memory. The issue can be triggered upon device connection without requiring user interaction, provided a MIDI input substream is open."], "name": "CVE-2026-80973", "package_state": [{"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": "2026-09-11T19:42:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80973\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80973\nhttps://git.kernel.org/stable/c/2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5\nhttps://git.kernel.org/stable/c/34816e2cfeabafb8eccf54687186ce25699e8363\nhttps://git.kernel.org/stable/c/466e911bbbbb779bb06337e35a286e5ca7af16b3\nhttps://git.kernel.org/stable/c/a478893b59e36cfe7d77a76b352f2db55502e879"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6d43ba816d1cf1d125bfbfc938f2a28a87facf9,466e911bbbbb779bb06337e35a286e5ca7af16b3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6d43ba816d1cf1d125bfbfc938f2a28a87facf9,2a6f6fba3bd31d2e8c957fefa29156e35e5e75d5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6d43ba816d1cf1d125bfbfc938f2a28a87facf9,34816e2cfeabafb8eccf54687186ce25699e8363)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6d43ba816d1cf1d125bfbfc938f2a28a87facf9,a478893b59e36cfe7d77a76b352f2db55502e879)"}}], "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": "semver", "value": "2.6.39"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.39)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-09-13T00:30:16.529924+00:00", "updated": "2026-09-21T02:30:08.200203+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}