ESB-2026.3375

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3375 freerdp security update 9 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: freerdp Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-22852 CVE-2026-23948 CVE-2026-22854 CVE-2026-24491 CVE-2026-22856 CVE-2026-24679 CVE-2026-24676 CVE-2026-24681 CVE-2026-24675 CVE-2026-24683 CVE-2026-23732 CVE-2026-24684 CVE-2026-31806 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:6958 Comment: CVSS (Max): 8.8 CVE-2026-31806 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H EPSS (Max): 0.1% (32nd) CVE-2026-23732 2026-04-07 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:6958 - Security Advisory Issued: 2026-04-08 Updated: 2026-04-08 Synopsis Freerdp security update Type/Severity Security Advisory: Important Topic An update for freerdp is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description 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): o freerdp: FreeRDP heap-use-after-free (CVE-2026-22856) o freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22854) o freerdp: FreeRDP heap-buffer-overflow (CVE-2026-22852) o freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow (CVE-2026-23732) o freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation (CVE-2026-24676) o freerdp: FreeRDP has a heap-use-after-free in video_timer (CVE-2026-24491) o freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2 () (CVE-2026-23948) o freerdp: FreeRDP has a Heap-use-after-free in play_thread (CVE-2026-24684) o freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb (CVE-2026-24681) o freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event (CVE-2026-24683) o freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface (CVE-2026-24679) o freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface (CVE-2026-24675) o 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products o Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64 o Red Hat Enterprise Linux Server - AUS 9.4 x86_64 o Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x o Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le o Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64 o Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le o Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 o Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64 o Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.4 ppc64le o Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.4 s390x o Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.4 aarch64 o Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 o Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x o Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 x86_64 o Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 aarch64 o Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 ppc64le o Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 s390x Fixes o BZ - 2429650 - CVE-2026-22856 freerdp: FreeRDP heap-use-after-free o BZ - 2429652 - CVE-2026-22854 freerdp: FreeRDP heap-buffer-overflow o BZ - 2429654 - CVE-2026-22852 freerdp: FreeRDP heap-buffer-overflow o BZ - 2430881 - CVE-2026-23732 freerdp: FreeRDP: Denial of Service via FastGlyph parsing buffer overflow o BZ - 2438201 - CVE-2026-24676 freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation o BZ - 2438202 - CVE-2026-24491 freerdp: FreeRDP has a heap-use-after-free in video_timer o BZ - 2438207 - CVE-2026-23948 freerdp: FreeRDP has a NULL Pointer Dereference in rdp_write_logon_info_v2() o BZ - 2438208 - CVE-2026-24684 freerdp: FreeRDP has a Heap-use-after-free in play_thread o BZ - 2438210 - CVE-2026-24681 freerdp: FreeRDP has a heap-use-after-free in urb_bulk_transfer_cb o BZ - 2438216 - CVE-2026-24683 freerdp: FreeRDP has a heap-use-after-free in ainput_send_input_event o BZ - 2438217 - CVE-2026-24679 freerdp: FreeRDP has a heap-buffer-overflow in urb_select_interface o BZ - 2438221 - CVE-2026-24675 freerdp: FreeRDP has a Heap-use-after-free in urb_select_interface o BZ - 2447376 - CVE-2026-31806 freerdp: FreeRDP: Arbitrary code execution via crafted Remote Desktop Protocol (RDP) server messages CVEs o CVE-2026-22852 o CVE-2026-22854 o CVE-2026-22856 o CVE-2026-23732 o CVE-2026-23948 o CVE-2026-24491 o CVE-2026-24675 o CVE-2026-24676 o CVE-2026-24679 o CVE-2026-24681 o CVE-2026-24683 o CVE-2026-24684 o CVE-2026-31806 References o https://access.redhat.com/security/updates/classification/#important - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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