CVE-2026-31897

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the xf_SetWindowMinMaxInfo function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window within xf_rail_server_min_max_info returns an unprotected pointer from the railWindows hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_AppUpdateWindowFromSurface function reads from a freed xfAppWindow object. This occurs because the RDPGFX DVC thread obtains a bare pointer via xf_rail_get_window without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order, resulting in a use-after-free condition. A malicious server can exploit this vulnerability to trigger a client-side heap use-after-free, causing a crash (Denial of Service) and potentially leading to heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25953)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_rail_server_local_move_size function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. A malicious server can trigger this client-side heap use-after-free, causing a crash (Denial of Service) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-25954)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function Stream_EnsureCapacity contains an integer overflow vulnerability that can create an endless blocking loop. This may affect all client and server implementations using FreeRDP. For practical exploitation, this will only work on 32-bit systems where the available physical memory is greater than or equal to SIZE_MAX.(CVE-2026-27951)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing horizontal bounds validation of H.264 metablock regionRects coordinates. In yuv.c, the clamp() function (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the…

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the xf_SetWindowMinMaxInfo function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window within xf_rail_server_min_max_info returns an unprotected pointer from the railWindows hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_AppUpdateWindowFromSurface function reads from a freed xfAppWindow object. This occurs because the RDPGFX DVC thread obtains a bare pointer via xf_rail_get_window without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order, resulting in a use-after-free condition. A malicious server can exploit this vulnerability to trigger a client-side heap use-after-free, causing a crash (Denial of Service) and potentially leading to heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25953)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_rail_server_local_move_size function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. A malicious server can trigger this client-side heap use-after-free, causing a crash (Denial of Service) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-25954)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function Stream_EnsureCapacity contains an integer overflow vulnerability that can create an endless blocking loop. This may affect all client and server implementations using FreeRDP. For practical exploitation, this will only work on 32-bit systems where the available physical memory is greater than or equal to SIZE_MAX.(CVE-2026-27951)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing horizontal bounds validation of H.264 metablock regionRects coordinates. In yuv.c, the clamp() function (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the…

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the xf_SetWindowMinMaxInfo function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window within xf_rail_server_min_max_info returns an unprotected pointer from the railWindows hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_AppUpdateWindowFromSurface function reads from a freed xfAppWindow object. This occurs because the RDPGFX DVC thread obtains a bare pointer via xf_rail_get_window without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order, resulting in a use-after-free condition. A malicious server can exploit this vulnerability to trigger a client-side heap use-after-free, causing a crash (Denial of Service) and potentially leading to heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25953)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_rail_server_local_move_size function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. A malicious server can trigger this client-side heap use-after-free, causing a crash (Denial of Service) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-25954)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function Stream_EnsureCapacity contains an integer overflow vulnerability that can create an endless blocking loop. This may affect all client and server implementations using FreeRDP. For practical exploitation, this will only work on 32-bit systems where the available physical memory is greater than or equal to SIZE_MAX.(CVE-2026-27951)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing horizontal bounds validation of H.264 metablock regionRects coordinates. In yuv.c, the clamp() function (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the…

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the xf_SetWindowMinMaxInfo function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window within xf_rail_server_min_max_info returns an unprotected pointer from the railWindows hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_AppUpdateWindowFromSurface function reads from a freed xfAppWindow object. This occurs because the RDPGFX DVC thread obtains a bare pointer via xf_rail_get_window without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order, resulting in a use-after-free condition. A malicious server can exploit this vulnerability to trigger a client-side heap use-after-free, causing a crash (Denial of Service) and potentially leading to heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25953)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_rail_server_local_move_size function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. A malicious server can trigger this client-side heap use-after-free, causing a crash (Denial of Service) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-25954)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function Stream_EnsureCapacity contains an integer overflow vulnerability that can create an endless blocking loop. This may affect all client and server implementations using FreeRDP. For practical exploitation, this will only work on 32-bit systems where the available physical memory is greater than or equal to SIZE_MAX.(CVE-2026-27951)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing horizontal bounds validation of H.264 metablock regionRects coordinates. In yuv.c, the clamp() function (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the…

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp.

Security Fix(es):

A malicious server can trigger a client-side global buffer overflow, causing a crash (denial of service)(CVE-2026-25942)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a heap-use-after-free vulnerability exists in the X11 client backend. Specifically, the xf_SetWindowMinMaxInfo function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window within xf_rail_server_min_max_info returns an unprotected pointer from the railWindows hash table. The main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer, leading to a dangling pointer. A malicious server can exploit this to trigger a client-side crash (Denial of Service) and potentially cause heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25952)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_AppUpdateWindowFromSurface function reads from a freed xfAppWindow object. This occurs because the RDPGFX DVC thread obtains a bare pointer via xf_rail_get_window without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order, resulting in a use-after-free condition. A malicious server can exploit this vulnerability to trigger a client-side heap use-after-free, causing a crash (Denial of Service) and potentially leading to heap corruption with a risk of code execution, depending on allocator behavior and surrounding heap layout.(CVE-2026-25953)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the xf_rail_server_local_move_size function dereferences a freed xfAppWindow pointer. This occurs because xf_rail_get_window returns an unprotected pointer from the railWindows hash table, and the main thread can concurrently delete the window (via a window delete order) while the RAIL channel thread is still using the pointer. A malicious server can trigger this client-side heap use-after-free, causing a crash (Denial of Service) and potential heap corruption with code-execution risk depending on allocator behavior and surrounding heap layout.(CVE-2026-25954)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the function Stream_EnsureCapacity contains an integer overflow vulnerability that can create an endless blocking loop. This may affect all client and server implementations using FreeRDP. For practical exploitation, this will only work on 32-bit systems where the available physical memory is greater than or equal to SIZE_MAX.(CVE-2026-27951)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap buffer overflow occurs in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path due to missing horizontal bounds validation of H.264 metablock regionRects coordinates. In yuv.c, the clamp() function (line 347) only validates top/bottom against the surface/YUV height, but never checks left/right against the surface width. When avc420_yuv_to_rgb (line 67) computes destination and source pointers using rect->left, it performs unchecked pointer arithmetic that can reach far beyond the allocated surface buffer. A malicious server sends a WIRE_TO_SURFACE_PDU_1 with AVC420 codec containing a regionRects entry where left greatly exceeds the surface width (e.g., left=60000 on a 128px surface). The H.264 bitstream decodes successfully, then yuv420_process_work_callback calls avc420_yuv_to_rgb which computes pDstPoint = pDstData + rect->top * nDstStep + rect->left * 4, writing 16-byte SSE vectors 1888+ bytes past the…

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.

• CVE-2026-31897: add early length check in planar_decompress to avoid OOB read
• CVE-2026-31885: fix array bounds checks in DSP IMA/MS ADPCM codec
• CVE-2026-31883: add missing length/bounds checks in DSP ADPCM decoder

These are all security issues fixed in the freerdp-3.24.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for freerdp fixes the following issues:

Update to version 3.24.2.

Security issues fixed:

• CVE-2026-25941: out-of-bounds read in the FreeRDP client RDPGFX channel (bsc#1258919).
• CVE-2026-25942: buffer overflow of global array in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: heap use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: heap use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: heap use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25955: heap use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258973).
• CVE-2026-25959: heap use-after-free in xf_cliprdr_provide_data_ (bsc#1258976).
• CVE-2026-25997: heap use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26271: buffer overread in FreeRDP icon processing (bsc#1258979).
• CVE-2026-26955: out-of-bounds write in FreeRDP clients using the GDI surface pipeline (bsc#1258982).
• CVE-2026-26965: out-of-bounds write in FreeRDP client RLE planar decode path (bsc#1258985).
• CVE-2026-29774: heap buffer overflow in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path (bsc#1259689).
• CVE-2026-29775: out-of-bounds access in the FreeRDP client bitmap cache subsystem (bsc#1259684).
• CVE-2026-29776: integer underflow in update_read_cache_bitmap_order (bsc#1259692).
• CVE-2026-31806: heap buffer overflow in nsc_process_message (bsc#1259653).
• CVE-2026-31883: heap buffer overwrite due to a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders (bsc#1259679).
• CVE-2026-31884: division by zero in MS-ADPCM and IMA-ADPCM decoders (bsc#1259680).
• CVE-2026-31885: out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders (bsc#1259686).
• CVE-2026-31897: out-of-bounds read in freerdp_bitmap_decompress_planar (bsc#1259693).
• CVE-2026-33952: client-side crash due to WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks() (bsc#1261196).
• CVE-2026-33977: client-side crash due to WINPR_ASSERT() failure in IMA ADPCM audio decoder (bsc#1261198).
• CVE-2026-33982: heap buffer overread in in winpr_aligned_offset_recalloc (bsc#1261222).
• CVE-2026-33983: undefined behavior and resource exhaustion via 80 billion iteration loop in progressive_decompress_tile_upgrade (bsc#1261200).
• CVE-2026-33984: heap buffer overflow in ClearCodec resize_vbar_entry (bsc#1261211).
• CVE-2026-33985: heap out-of-bounds read in clear_decompress_glyph_data (bsc#1261217).
• CVE-2026-33986: heap out-of-bounds write due to H.264 YUV buffer dimension desync (bsc#1261223).
• CVE-2026-33987: heap out-of-bounds write due to persistent cache bmpSize desync (bsc#1261226).
• CVE-2026-33995: double-free vulnerability in kerberos_AcceptSecurityContext and kerberos_InitializeSecurityContextA (bsc#1261227).

Other updates and bugfixes:

• Version 3.24.2:

  • [channels,video] fix wrong cast (#12511)
  • [codec,openh264] reject encoder ABI mismatch on runtime-loaded library (#12510)
  • [client,sdl] create a copy of rdpPointer (#12512)
  • [codec,video] properly pass intermediate format (#12518)
  • [utils, signal] lazily initialize Windows CRITICAL_SECTION to match POSIX static mutex behavior (#12520) winpr: improve libunwind backtraces (#12530)
  • [server,shadow] remember selected caps (#12528)
  • Zero credential data before free in NLA and NTLM context (#12532)
  • [server,proxy] ignore missing client in input channel (#12536)
  • [server,proxy] ignore rdpdr messages (#12537)
  • [winpr,sspi] improve kerberos logging (#12538)
  • Codec fixes (#12542)

• Version 3.24.1:

  • [warnings] fix various sign and cast warnings (#12480)
  • [client,x11] start with xfc->remote_app = TRUE; (#12491)
  • Sam file read regression fix (#12484)
  • [ncrypt,smartcardlogon] support ECC keys in PKCS#11 smartcard enumeration (#12490)
  • Fix: memory leak in rdp_client_establish_keys() (#12494)
  • Fix memory leak in freerdp_settings_int_buffer_copy() on…

This update for freerdp fixes the following issues:

• CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRE_TO_SURFACE_2 PDU (bsc#1258919).
• CVE-2026-25942: Global-buffer-overflow in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: Heap-use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: Heap-use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25997: Heap-use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26986: Heap-use-after-free in rail_window_free (bsc#1258967).
• CVE-2026-27015: Smartcard NDR alignment padding triggers reachable WINPR_ASSERT abort (bsc#1258987).
• CVE-2026-27951: Denial of service via endless blocking loop in Stream_EnsureCapacity (bsc#1258939).
• CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
• CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
• CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
• CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

This update for freerdp fixes the following issues:

• CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRE_TO_SURFACE_2 PDU (bsc#1258919).
• CVE-2026-25942: Global-buffer-overflow in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: Heap-use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: Heap-use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25955: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258973).
• CVE-2026-25959: Heap-use-after-free in xf_cliprdr_provide_data_ (bsc#1258976).
• CVE-2026-25997: Heap-use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26986: Heap-use-after-free in rail_window_free (bsc#1258967).
• CVE-2026-27015: Smartcard NDR alignment padding triggers reachable WINPR_ASSERT abort (bsc#1258987).
• CVE-2026-27950: Denial of service due to incomplete fix for heap-use-after-free vulnerability (bsc#1258941).
• CVE-2026-27951: Denial of service via endless blocking loop in Stream_EnsureCapacity (bsc#1258939).
• CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
• CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
• CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
• CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

This update for freerdp fixes the following issues:

• CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRE_TO_SURFACE_2 PDU (bsc#1258919).
• CVE-2026-25942: Global-buffer-overflow in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: Heap-use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: Heap-use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25997: Heap-use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26986: Heap-use-after-free in rail_window_free (bsc#1258967).
• CVE-2026-27015: Smartcard NDR alignment padding triggers reachable WINPR_ASSERT abort (bsc#1258987).
• CVE-2026-27951: Denial of service via endless blocking loop in Stream_EnsureCapacity (bsc#1258939).
• CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
• CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
• CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
• CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

This update for freerdp fixes the following issues:

• CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRE_TO_SURFACE_2 PDU (bsc#1258919).
• CVE-2026-25942: Global-buffer-overflow in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: Heap-use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: Heap-use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25997: Heap-use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26986: Heap-use-after-free in rail_window_free (bsc#1258967).
• CVE-2026-27015: Smartcard NDR alignment padding triggers reachable WINPR_ASSERT abort (bsc#1258987).
• CVE-2026-27951: Denial of service via endless blocking loop in Stream_EnsureCapacity (bsc#1258939).
• CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
• CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
• CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
• CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

This update for freerdp2 fixes the following issues:

• CVE-2026-25941: Out-of-Bounds Read in client RDPGFX channel via crafted WIRE_TO_SURFACE_2 PDU (bsc#1258919).
• CVE-2026-25942: Global-buffer-overflow in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: Heap-use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: Heap-use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: Heap-use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25997: Heap-use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26986: Heap-use-after-free in rail_window_free (bsc#1258967).
• CVE-2026-27015: Smartcard NDR alignment padding triggers reachable WINPR_ASSERT abort (bsc#1258987).
• CVE-2026-27951: Denial of Service via endless blocking loop in Stream_EnsureCapacity (bsc#1258939).
• CVE-2026-29774: Missing bounds validation can cause a client-side heap buffer overflow (bsc#1259689).
• CVE-2026-29775: Malicious server can trigger a client-side heap out-of-bounds access (bsc#1259684).
• CVE-2026-29776: Missing length check can lead to an integer underflow (bsc#1259692).
• CVE-2026-31897: Missing length check can cause an out-of-bounds read (bsc#1259693).

This update for freerdp fixes the following issues:

Update to version 3.24.2.

Security issues fixed:

• CVE-2026-25941: out-of-bounds read in the FreeRDP client RDPGFX channel (bsc#1258919).
• CVE-2026-25942: buffer overflow of global array in xf_rail_server_execute_result (bsc#1258920).
• CVE-2026-25952: heap use-after-free in xf_SetWindowMinMaxInfo (bsc#1258921).
• CVE-2026-25953: heap use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258923).
• CVE-2026-25954: heap use-after-free in xf_rail_server_local_move_size (bsc#1258924).
• CVE-2026-25955: heap use-after-free in xf_AppUpdateWindowFromSurface (bsc#1258973).
• CVE-2026-25959: heap use-after-free in xf_cliprdr_provide_data_ (bsc#1258976).
• CVE-2026-25997: heap use-after-free in xf_clipboard_format_equal (bsc#1258977).
• CVE-2026-26271: buffer overread in FreeRDP icon processing (bsc#1258979).
• CVE-2026-26955: out-of-bounds write in FreeRDP clients using the GDI surface pipeline (bsc#1258982).
• CVE-2026-26965: out-of-bounds write in FreeRDP client RLE planar decode path (bsc#1258985).
• CVE-2026-29774: heap buffer overflow in the FreeRDP client's AVC420/AVC444 YUV-to-RGB conversion path (bsc#1259689).
• CVE-2026-29775: out-of-bounds access in the FreeRDP client bitmap cache subsystem (bsc#1259684).
• CVE-2026-29776: integer underflow in update_read_cache_bitmap_order (bsc#1259692).
• CVE-2026-31806: heap buffer overflow in nsc_process_message (bsc#1259653).
• CVE-2026-31883: heap buffer overwrite due to a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders (bsc#1259679).
• CVE-2026-31884: division by zero in MS-ADPCM and IMA-ADPCM decoders (bsc#1259680).
• CVE-2026-31885: out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders (bsc#1259686).
• CVE-2026-31897: out-of-bounds read in freerdp_bitmap_decompress_planar (bsc#1259693).
• CVE-2026-33952: client-side crash due to WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks() (bsc#1261196).
• CVE-2026-33977: client-side crash due to WINPR_ASSERT() failure in IMA ADPCM audio decoder (bsc#1261198).
• CVE-2026-33982: heap buffer overread in in winpr_aligned_offset_recalloc (bsc#1261222).
• CVE-2026-33983: undefined behavior and resource exhaustion via 80 billion iteration loop in progressive_decompress_tile_upgrade (bsc#1261200).
• CVE-2026-33984: heap buffer overflow in ClearCodec resize_vbar_entry (bsc#1261211).
• CVE-2026-33985: heap out-of-bounds read in clear_decompress_glyph_data (bsc#1261217).
• CVE-2026-33986: heap out-of-bounds write due to H.264 YUV buffer dimension desync (bsc#1261223).
• CVE-2026-33987: heap out-of-bounds write due to persistent cache bmpSize desync (bsc#1261226).
• CVE-2026-33995: double-free vulnerability in kerberos_AcceptSecurityContext and kerberos_InitializeSecurityContextA (bsc#1261227).

Other updates and bugfixes:

• Version 3.24.2:

  • [channels,video] fix wrong cast (#12511)
  • [codec,openh264] reject encoder ABI mismatch on runtime-loaded library (#12510)
  • [client,sdl] create a copy of rdpPointer (#12512)
  • [codec,video] properly pass intermediate format (#12518)
  • [utils, signal] lazily initialize Windows CRITICAL_SECTION to match POSIX static mutex behavior (#12520) winpr: improve libunwind backtraces (#12530)
  • [server,shadow] remember selected caps (#12528)
  • Zero credential data before free in NLA and NTLM context (#12532)
  • [server,proxy] ignore missing client in input channel (#12536)
  • [server,proxy] ignore rdpdr messages (#12537)
  • [winpr,sspi] improve kerberos logging (#12538)
  • Codec fixes (#12542)

• Version 3.24.1:

  • [warnings] fix various sign and cast warnings (#12480)
  • [client,x11] start with xfc->remote_app = TRUE; (#12491)
  • Sam file read regression fix (#12484)
  • [ncrypt,smartcardlogon] support ECC keys in PKCS#11 smartcard enumeration (#12490)
  • Fix: memory leak in rdp_client_establish_keys() (#12494)
  • Fix memory leak in freerdp_settings_int_buffer_copy() on…

It was discovered that FreeRDP contained multiple security issues. An attacker could possibly use these issues to obtain sensitive information, cause FreeRDP to crash, resulting in a denial of service, or execute arbitrary code.