alsa-2026:6340
Vulnerability from osv_almalinux
Published
2026-04-01 00:00
Modified
2026-04-02 09:09
Summary
Important: freerdp security update
Details

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

  • freerdp: FreeRDP heap-use-after-free (CVE-2026-22856)
  • freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854)
  • freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852)
  • freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732)
  • freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676)
  • freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491)
  • freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948)
  • freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684)
  • freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681)
  • freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683)
  • freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679)
  • freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675)
  • freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "freerdp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.11.7-1.el9_7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "freerdp-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.11.7-1.el9_7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "freerdp-libs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.11.7-1.el9_7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libwinpr"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.11.7-1.el9_7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libwinpr-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:2.11.7-1.el9_7.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.  \n\nSecurity Fix(es):  \n\n  * freerdp: FreeRDP heap-use-after-free (CVE-2026-22856)\n  * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854)\n  * freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852)\n  * freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732)\n  * freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676)\n  * freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491)\n  * freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() (CVE-2026-23948)\n  * freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684)\n  * freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681)\n  * freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683)\n  * freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679)\n  * freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675)\n  * freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages (CVE-2026-31806)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:6340",
  "modified": "2026-04-02T09:09:13Z",
  "published": "2026-04-01T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:6340"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-22852"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-22854"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-22856"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23732"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23948"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24491"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24675"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24676"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24679"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24681"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24683"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-24684"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31806"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2429650"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2429652"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2429654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2430881"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438201"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438202"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438207"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438208"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438210"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438216"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438217"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2438221"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2447376"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-6340.html"
    }
  ],
  "related": [
    "CVE-2026-22856",
    "CVE-2026-22854",
    "CVE-2026-22852",
    "CVE-2026-23732",
    "CVE-2026-24676",
    "CVE-2026-24491",
    "CVE-2026-23948",
    "CVE-2026-24684",
    "CVE-2026-24681",
    "CVE-2026-24683",
    "CVE-2026-24679",
    "CVE-2026-24675",
    "CVE-2026-31806"
  ],
  "summary": "Important: freerdp security update"
}


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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.