ubuntu-cve-2026-24683
Vulnerability from osv_ubuntu
Published
2026-02-09 19:15
Modified
2026-04-22 07:58
Summary
Details

FreeRDP is a free implementation of the Remote Desktop Protocol. ainput_send_input_event caches channel_callback in a local variable and later uses it without synchronization; a concurrent channel close can free or reinitialize the callback, leading to a use after free. Prior to 3.22.0, This vulnerability is fixed in 3.22.0.

Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "freerdp2-shadow-x11",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "freerdp2-wayland",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "freerdp2-x11",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libfreerdp-client2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libfreerdp-server2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libfreerdp-shadow2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libfreerdp2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libuwac0-0",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libwinpr-tools2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "libwinpr2-2",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          },
          {
            "binary_name": "winpr-utils",
            "binary_version": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "freerdp2",
        "purl": "pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-0ubuntu0.20.04.2+esm3?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.1+dfsg1-0ubuntu0.20.04.2+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.0~git20190204.1.2693389a+dfsg1-1",
        "2.0.0~git20190204.1.2693389a+dfsg1-2",
        "2.0.0~git20190204.1.2693389a+dfsg1-2build1",
        "2.0.0~git20190204.1.2693389a+dfsg1-2build2",
        "2.1.1+dfsg1-0ubuntu0.20.04.1",
        "2.2.0+dfsg1-0ubuntu0.20.04.1",
        "2.2.0+dfsg1-0ubuntu0.20.04.2",
        "2.2.0+dfsg1-0ubuntu0.20.04.3",
        "2.2.0+dfsg1-0ubuntu0.20.04.4",
        "2.2.0+dfsg1-0ubuntu0.20.04.5",
        "2.2.0+dfsg1-0ubuntu0.20.04.6",
        "2.6.1+dfsg1-0ubuntu0.20.04.1",
        "2.6.1+dfsg1-0ubuntu0.20.04.2",
        "2.6.1+dfsg1-0ubuntu0.20.04.2+esm1",
        "2.6.1+dfsg1-0ubuntu0.20.04.2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "freerdp2-shadow-x11",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "freerdp2-wayland",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "freerdp2-x11",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libfreerdp-client2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libfreerdp-server2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libfreerdp-shadow2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libfreerdp2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libuwac0-0",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libwinpr-tools2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "libwinpr2-2",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          },
          {
            "binary_name": "winpr-utils",
            "binary_version": "2.6.1+dfsg1-3ubuntu2.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "freerdp2",
        "purl": "pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.10?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.1+dfsg1-3ubuntu2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.0+dfsg1-2build1",
        "2.3.0+dfsg1-2ubuntu1",
        "2.3.0+dfsg1-2ubuntu2",
        "2.4.1+dfsg1-1",
        "2.4.1+dfsg1-1ubuntu1",
        "2.4.1+dfsg1-1ubuntu2",
        "2.5.0+dfsg1-1",
        "2.6.0+dfsg1-1",
        "2.6.1+dfsg1-1",
        "2.6.1+dfsg1-3",
        "2.6.1+dfsg1-3ubuntu1",
        "2.6.1+dfsg1-3ubuntu2",
        "2.6.1+dfsg1-3ubuntu2.1",
        "2.6.1+dfsg1-3ubuntu2.2",
        "2.6.1+dfsg1-3ubuntu2.3",
        "2.6.1+dfsg1-3ubuntu2.4",
        "2.6.1+dfsg1-3ubuntu2.5",
        "2.6.1+dfsg1-3ubuntu2.6",
        "2.6.1+dfsg1-3ubuntu2.7",
        "2.6.1+dfsg1-3ubuntu2.8",
        "2.6.1+dfsg1-3ubuntu2.9"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "freerdp3-shadow-x11",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "freerdp3-wayland",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "freerdp3-x11",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libfreerdp-client3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libfreerdp-server3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libfreerdp-shadow3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libfreerdp3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libwinpr-tools3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "libwinpr3-3",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          },
          {
            "binary_name": "winpr3-utils",
            "binary_version": "3.5.1+dfsg1-0ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "freerdp3",
        "purl": "pkg:deb/ubuntu/freerdp3@3.5.1+dfsg1-0ubuntu1.2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.1+dfsg1-0ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.0+dfsg1-0ubuntu2",
        "3.4.0+dfsg1-0ubuntu3",
        "3.4.0+dfsg1-0ubuntu4",
        "3.5.0+dfsg1-0ubuntu1",
        "3.5.1+dfsg1-0ubuntu1",
        "3.5.1+dfsg1-0ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "freerdp2-shadow-x11",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "freerdp2-wayland",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "freerdp2-x11",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libfreerdp-client2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libfreerdp-server2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libfreerdp-shadow2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libfreerdp2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libuwac0-0t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libwinpr-tools2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "libwinpr2-2t64",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          },
          {
            "binary_name": "winpr-utils",
            "binary_version": "2.11.5+dfsg1-1ubuntu0.1~esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "freerdp2",
        "purl": "pkg:deb/ubuntu/freerdp2@2.11.5+dfsg1-1ubuntu0.1~esm5?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.11.5+dfsg1-1ubuntu0.1~esm5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.10.0+dfsg1-1.1ubuntu1",
        "2.11.2+dfsg1-1",
        "2.11.2+dfsg1-1build1",
        "2.11.2+dfsg1-1build3",
        "2.11.5+dfsg1-1build1",
        "2.11.5+dfsg1-1build2",
        "2.11.5+dfsg1-1ubuntu0.1~esm1",
        "2.11.5+dfsg1-1ubuntu0.1~esm2",
        "2.11.5+dfsg1-1ubuntu0.1~esm3",
        "2.11.5+dfsg1-1ubuntu0.1~esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "freerdp3-proxy",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "freerdp3-proxy-modules",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "freerdp3-sdl",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "freerdp3-shadow-x11",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "freerdp3-wayland",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "freerdp3-x11",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp-client3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp-server-proxy3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp-server3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp-shadow-subsystem3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp-shadow3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libfreerdp3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libwinpr-tools3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "libwinpr3-3",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          },
          {
            "binary_name": "winpr3-utils",
            "binary_version": "3.16.0+dfsg-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "freerdp3",
        "purl": "pkg:deb/ubuntu/freerdp3@3.16.0+dfsg-2ubuntu0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.16.0+dfsg-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.14.0+dfsg-1ubuntu1",
        "3.15.0+dfsg-2.1",
        "3.16.0+dfsg-1ubuntu1",
        "3.16.0+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "details": "FreeRDP is a free implementation of the Remote Desktop Protocol. ainput_send_input_event caches channel_callback in a local variable and later uses it without synchronization; a concurrent channel close can free or reinitialize the callback, leading to a use after free. Prior to 3.22.0, This vulnerability is fixed in 3.22.0.",
  "id": "UBUNTU-CVE-2026-24683",
  "modified": "2026-04-22T07:58:32Z",
  "published": "2026-02-09T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-24683"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-24683"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FreeRDP/FreeRDP/commit/d9ca272dce7a776ab475e9b1a8e8c3d2968c8486"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8042-1"
    }
  ],
  "related": [
    "USN-8042-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-24683"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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