CVE-2022-50719 (GCVE-0-2022-50719)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:22 – Updated: 2026-08-05 08:59
VLAI
Title
ALSA: line6: fix stack overflow in line6_midi_transmit
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: fix stack overflow in line6_midi_transmit Correctly calculate available space including the size of the chunk buffer. This fixes a buffer overflow when multiple MIDI sysex messages are sent to a PODxt device.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < b026af92b2cea907c780f7168c730c816cd33311 (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 49cb7737e733013ec86aa77ed2e19b94a68eaa05 (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 0c76087449ee4ed45a88b10017d02c6694caedb1 (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 25e8c6ecb46843a955f254b8f0d77894e4a53dc4 (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 66f359ad66d49f75d39ac729f9114dabf90b81bb (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 0c9118e381ff538874e00fd4e66a768273c150fb (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 61e4be4a60cc6de723f8c574ddbcb3025eb44cac (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < 389d34c2a8b52acc351fd932ed4bea41fee5a39b (git)
Affected: f2459201c72e8f8553644505eed19954d4c3a023 , < b8800d324abb50160560c636bfafe2c81001b66c (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.17 , ≤ 6.0.* (semver)
Unaffected: 6.1.3 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/line6/midi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b026af92b2cea907c780f7168c730c816cd33311",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "49cb7737e733013ec86aa77ed2e19b94a68eaa05",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "0c76087449ee4ed45a88b10017d02c6694caedb1",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "25e8c6ecb46843a955f254b8f0d77894e4a53dc4",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "66f359ad66d49f75d39ac729f9114dabf90b81bb",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "0c9118e381ff538874e00fd4e66a768273c150fb",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "61e4be4a60cc6de723f8c574ddbcb3025eb44cac",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "389d34c2a8b52acc351fd932ed4bea41fee5a39b",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            },
            {
              "lessThan": "b8800d324abb50160560c636bfafe2c81001b66c",
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/line6/midi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "lessThan": "3.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.337",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.303",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.270",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.229",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.87",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.17",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.3",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "3.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "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\u0027s 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."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:28.963Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50719",
    "datePublished": "2025-12-24T12:22:42.697Z",
    "dateReserved": "2025-12-24T12:20:40.329Z",
    "dateUpdated": "2026-08-05T08:59:28.963Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50719",
      "date": "2026-09-22",
      "epss": "0.00226",
      "percentile": "0.13587"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "sound/usb/line6/midi.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "b026af92b2cea907c780f7168c730c816cd33311",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "49cb7737e733013ec86aa77ed2e19b94a68eaa05",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0c76087449ee4ed45a88b10017d02c6694caedb1",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "25e8c6ecb46843a955f254b8f0d77894e4a53dc4",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "66f359ad66d49f75d39ac729f9114dabf90b81bb",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0c9118e381ff538874e00fd4e66a768273c150fb",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "61e4be4a60cc6de723f8c574ddbcb3025eb44cac",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "389d34c2a8b52acc351fd932ed4bea41fee5a39b",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b8800d324abb50160560c636bfafe2c81001b66c",
                    "status": "affected",
                    "version": "f2459201c72e8f8553644505eed19954d4c3a023",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "sound/usb/line6/midi.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.15"
                  },
                  {
                    "lessThan": "3.15",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.9.*",
                    "status": "unaffected",
                    "version": "4.9.337",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.303",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.270",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.229",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.163",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.87",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.17",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.3",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.2",
                    "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: 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."
          }
        ],
        "id": "CVE-2022-50719",
        "lastModified": "2026-08-04T10:18:22.053",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2025-12-24T13:15:58.560",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0c76087449ee4ed45a88b10017d02c6694caedb1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0c9118e381ff538874e00fd4e66a768273c150fb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/25e8c6ecb46843a955f254b8f0d77894e4a53dc4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/389d34c2a8b52acc351fd932ed4bea41fee5a39b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/49cb7737e733013ec86aa77ed2e19b94a68eaa05"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/61e4be4a60cc6de723f8c574ddbcb3025eb44cac"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/66f359ad66d49f75d39ac729f9114dabf90b81bb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b026af92b2cea907c780f7168c730c816cd33311"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b8800d324abb50160560c636bfafe2c81001b66c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:59:16+00:00",
      "cve": "CVE-2022-50719",
      "id": "CVE-2022-50719",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: line6: fix stack overflow in line6_midi_transmit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50719.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:21:24Z",
      "cve": "CVE-2022-50719",
      "id": "CVE-2022-50719",
      "initial_release_date": "2025-12-25T01:05:01Z",
      "product_status:known_affected": "522",
      "product_status:known_not_affected": "155",
      "product_status:recommended": "233",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50719",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50719.json",
      "version": "31"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.