{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50719", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:20:40.329Z", "datePublished": "2025-12-24T12:22:42.697Z", "dateUpdated": "2026-08-05T08:59:28.963Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:59:28.963Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: line6: fix stack overflow in line6_midi_transmit\n\nCorrectly calculate available space including the size of the chunk\nbuffer. This fixes a buffer overflow when multiple MIDI sysex\nmessages are sent to a PODxt device." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Reached by writing MIDI/sysex to the local ALSA rawmidi node (/dev/snd/midiC*D*) once a Line 6 CONTROL_MIDI device is bound; presence of the device is an environmental precondition, not a physical attack vector (same model as CVE-2024-44954).\nAC:L - An unprivileged local user can deterministically overflow the 16-byte stack chunk by sending MIDI data whenever max_packet_size exceeds LINE6_FALLBACK_MAXPACKETSIZE (as on a real PODxt); no race or uncontrollable layout is required.\nPR:L - Only ordinary access to the ALSA rawmidi character device is needed, which desktop/session users get via udev ACLs or audio group membership; no CAP_SYS_ADMIN or root is required.\nUI:N - The attacker opens the rawmidi node and writes the overflowing MIDI payload themselves; no separate victim action such as mounting a filesystem is required.\nS:U - Stack corruption and any resulting privilege escalation remain within the host kernel's security authority; this is not a VM escape or IOMMU/DMA boundary bypass.\nC:H - Attacker-controlled stack overflow is memory corruption that can be leveraged for information disclosure (e.g., via corrupted stack frames or subsequent primitives), so Confidentiality is High per OOB-write guidance.\nI:H - The out-of-bounds write into the stack chunk with attacker-controlled MIDI bytes can overwrite return addresses and locals, yielding a control-flow hijack / arbitrary-write primitive.\nA:H - Stack buffer overflow reliably corrupts kernel stack state and can oops/panic the kernel even when not fully weaponized, so Availability is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/usb/line6/midi.c" ], "versions": [ { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "b026af92b2cea907c780f7168c730c816cd33311", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "49cb7737e733013ec86aa77ed2e19b94a68eaa05", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "0c76087449ee4ed45a88b10017d02c6694caedb1", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "25e8c6ecb46843a955f254b8f0d77894e4a53dc4", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "66f359ad66d49f75d39ac729f9114dabf90b81bb", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "0c9118e381ff538874e00fd4e66a768273c150fb", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "61e4be4a60cc6de723f8c574ddbcb3025eb44cac", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "389d34c2a8b52acc351fd932ed4bea41fee5a39b", "status": "affected", "versionType": "git" }, { "version": "f2459201c72e8f8553644505eed19954d4c3a023", "lessThan": "b8800d324abb50160560c636bfafe2c81001b66c", "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/line6/midi.c" ], "versions": [ { "version": "3.15", "status": "affected" }, { "version": "0", "lessThan": "3.15", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.87", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.17", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.3", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "3.15", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "5.15.87" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.0.17" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.1.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.15", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b026af92b2cea907c780f7168c730c816cd33311" }, { "url": "https://git.kernel.org/stable/c/49cb7737e733013ec86aa77ed2e19b94a68eaa05" }, { "url": "https://git.kernel.org/stable/c/0c76087449ee4ed45a88b10017d02c6694caedb1" }, { "url": "https://git.kernel.org/stable/c/25e8c6ecb46843a955f254b8f0d77894e4a53dc4" }, { "url": "https://git.kernel.org/stable/c/66f359ad66d49f75d39ac729f9114dabf90b81bb" }, { "url": "https://git.kernel.org/stable/c/0c9118e381ff538874e00fd4e66a768273c150fb" }, { "url": "https://git.kernel.org/stable/c/61e4be4a60cc6de723f8c574ddbcb3025eb44cac" }, { "url": "https://git.kernel.org/stable/c/389d34c2a8b52acc351fd932ed4bea41fee5a39b" }, { "url": "https://git.kernel.org/stable/c/b8800d324abb50160560c636bfafe2c81001b66c" } ], "title": "ALSA: line6: fix stack overflow in line6_midi_transmit", "x_generator": { "engine": "bippy-1.2.0" } } } }