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SUSE alert SUSE-SU-2026:22194-1 (freerdp)



From:
              SLE-SECURITY-UPDATES <null@suse.de>


To:
              sle-security-updates@lists.suse.com


Subject:
              SUSE-SU-2026:22194-1: important: Security update for freerdp


Date:
              Tue, 23 Jun 2026 16:37:10 -0000


Message-ID:
              <178223263049.221.17979660855307116295@f1988df5aa67>


# Security update for freerdp

Announcement ID: SUSE-SU-2026:22194-1  
Release Date: 2026-06-20T06:54:39Z  
Rating: important  
References:

  * bsc#1174200
  * bsc#1261217
  * bsc#1261222
  * bsc#1261223
  * bsc#1261226
  * bsc#1261227
  * bsc#1262743
  * bsc#1266317
  * bsc#1267008
  * bsc#1267009
  * bsc#1267010
  * bsc#1267011

  
Cross-References:

  * CVE-2026-33982
  * CVE-2026-33985
  * CVE-2026-33986
  * CVE-2026-33987
  * CVE-2026-33995
  * CVE-2026-40033
  * CVE-2026-40254
  * CVE-2026-44420
  * CVE-2026-44421
  * CVE-2026-44422
  * CVE-2026-45700

  
CVSS scores:

  * CVE-2026-33982 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  * CVE-2026-33982 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
  * CVE-2026-33982 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
  * CVE-2026-33985 ( SUSE ):  5.9
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-33985 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
  * CVE-2026-33985 ( NVD ):  7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L
  * CVE-2026-33985 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
  * CVE-2026-33986 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-33986 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-33987 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-33987 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
  * CVE-2026-33987 ( NVD ):  6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
  * CVE-2026-33995 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-33995 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-40033 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-40033 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-40033 ( NVD ):  8.7

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-40033 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-40254 ( SUSE ):  2.1
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-40254 ( SUSE ):  4.2 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-40254 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-40254 ( NVD ):  4.2 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-44420 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-44420 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-44421 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-44421 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-44422 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-44422 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-44422 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-45700 ( SUSE ):  7.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-45700 ( SUSE ):  8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-45700 ( NVD ):  7.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-45700 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves 11 vulnerabilities and has one fix can now be installed.

## Description:

This update for freerdp fixes the following issues

Update to version 3.26.0:

  * CVE-2026-33982: heap-buffer-overflow READ vulnerability at 24 bytes before
    the allocation, in winpr_aligned_offset_recalloc() (bsc#1261222).
  * CVE-2026-33985: FreeRDP: Information disclosure via heap memory out of
    bounds read (bsc#1261217).
  * CVE-2026-33986: heap OOB write due to H.264 YUV buffer dimension desync
    (bsc#1261223).
  * CVE-2026-33987: heap OOB write due to persistent cache bmpSize desync
    (bsc#1261226).
  * CVE-2026-33995: double-free vulnerability in
    kerberos_AcceptSecurityContext() and kerberos_InitializeSecurityContextA()
    (bsc#1261227).
  * CVE-2026-40033: heap buffer overflow in `gdi_CacheToSurface` allows
    attackers to cause a denial of service or achieve remote execute code
    (bsc#1266317).
  * CVE-2026-40254: off-by-one in contains_dotdot() allows drive channel path
    traversal (bsc#1262743).
  * CVE-2026-44420: Prior to 3.26.0, a malicious RDP client can trigger a heap-
    buffer-overflow write in FreeRDP's server- side clipboard (cliprdr) channel
    (bsc#1267008).
  * CVE-2026-44421: Prior to 3.26.0, a malicious RDP server can trigger a heap-
    buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs
    (bsc#1267009).
  * CVE-2026-44422: Prior to 3.26.0, a malicious-server-triggerable heap use-
    after-free / double-free in the FreeRDP client's RDPEAR authentication-
    redirection path exists (bsc#1267010).
  * CVE-2026-45700: n attacker can bypass the check with a large nDstStep and a
    large nXDst, causing planar_decompress_plane_rle() to write past the end of
    pTempData (bsc#1267011).

Changes:

  * cmake: Findyuv: Use correct pkgconfig name (#12666)
  * Remove deallocator attribute from rfx_message_free (#12681)
  * [winpr,utils] improve winpr/ntlm.h (#12677)
  * rdpecam-v4l: stop the capture thread when streaming is cleared (#12690)
  * fix(winpr,ncrypt): support PIV retired key slots for smartcard logon
    (#12684)
  * [core,instance] fix deprecation guards (#12691)
  * [ci,alt-arch] enable internal MD4, MD5 and RC4 (#12692)
  * Add VideoToolbox H.264 support for ffmpeg (#12694)
  * [client,common] add /args-from:file: syntax (#12697)
  * [ci,freebsd] update freebsd builds (#12698, #12700, #12701, #12702)
  * [client, android] UI modernization, SQLCipher and more (#12685, #12686,
    #12687, #12730,
  * # 12731, #12736, #12737, #12688)

  * [cmake,deps] use alias target for sso-mib (#12706)
  * [core,settings] add auto reconnect triggered flag (#12709)
  * Force YUV420P when videotoolbox is used (#12711)
  * Release cleanups (#12712)
  * [gdi,gfx] fix bounds checks and proxy unit tests (#12713)
  * Improved input checks (#12714)
  * [winpr,utils] add unit tests for command line parser (#12716)
  * Cmdline fixes (#12717)
  * [codec,planar] fix bounds checks (#12718)
  * [client,common] add freerdp_client_settings_parse_command_line_argume...
    (#12724)
  * [winpr,sspi] clean up ntlm code (#12732)
  * Experimental AV1 support has been added. This currently works only with
    FreeRDP based servers.
  * Most notably there is now support for [MS-RDPEWA] (FIDO2 redirection)
  * Android client received a (small) facelift
  * Improved SDL3 client drawing performance
  * Console output support for SDL3 (windows) and windows native client
  * RDP proxy now supports NSCodec and RFX modes.
  * RDP PRoxy now has smartcard emulation and SAM file support (via config file)
  * Smartcard KSP support for NLA authentication
  * [winpr,wlog] add WLog_SetGlobalPrefix (#12497)
  * [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)
  * [winpr,sspi] Fix context nullptr handling (#12543)
  * Dev 3.24.3 dev0 (#12545)
  * Fix memory leak in gdi_create_bitmap() on gdi_CreateBitmap failure
    (libfreerdp/gdi/graphics.c) (#12547)
  * Fix memory leak in vgids_read_do_fkt() on Stream_New failure
    (libfreerdp/emu/scard/smartcard_virtual_gids.c) (#12548)
  * Proxy config improve (#12549)
  * Proxy config improve (#12550)
  * [client,sdl] clamp cursor hotspot (#12553)
  * RFC: Research/av1 codec extension (#12527)
  * [winpr,kerberos] fix krb_log_context_encryption (#12555)
  * [client,sdl] fix global init return check (#12558)
  * Fix remote credential with windows11h2 (#12560)
  * Proxy scard auth improvements (#12561)
  * [winpr,sspi] guard krb5_get_etype_info (#12562)
  * [utils,smartcard] fix STATUS_BUFFER_TOO_SMALL (#12564)
  * [client,common] do not manipulate security settings for smartcard-logon
    (#12567)
  * [channels,audin] fix regression for microphone (#12570)
  * [client,sdl] add SDL_KMOD_MODE and SDL_KMOD_LEVEL5 (#12569)
  * Fix unbound strlen on slotDescription (#12571)
  * build: Update FindFFmpeg.cmake to support Apple frameworks with 'lib' prefix
    (#12565)
  * [channels,rdpewa] add WebAuthn virtual channel support (#12572)
  * [core] fix freerdp_get_nla_sspi_error always returning 0 on client (#12574)
  * [ci] enable rdpewa channel (#12576)
  * small refactoring (#12578)
  * Rdpewa unify notifications (#12581)
  * [client,sdl] fix crash when clicking 'cancel' on PIN popup (#12580)
  * [channels,drive] refine bounds checks (#12584)
  * fix: smartcard logon with ECC keys and minidriver-assigned container names
    (#12585)
  * Various papercuts (#12583)
  * fix: console output on Windows client (#12573)
  * [winpr,crt] dump stack on aligned memory errors (#12588)
  * [client,x11] keep scancode input for Ctrl/Alt/Super combinations in
    /kbd:unicode mode (#12590)
  * [codec,progressive] fix underflow guard in progressive_rfx_quant_sub
    (#12592)
  * fix: wfreerdp floatbar visibility (#12594)
  * [winpr,json] return a copy from WINPR_JSON_Print* (#12595)
  * [client,sdl] drop WITH_DEBUG_SDL_EVENTS (#12599)
  * Ncrypt and asn1 cleanup (#12604)
  * Video channel fix (#12593)
  * [codec,h264] fix media foundation backend (#12606)
  * fix(sdl): detect Hyprland and river in tryFallback() (#12608)
  * Proxy stress fixes (#12597)
  * Add new fuzzer tests (#12613)
  * fix(sdl): use SDL_Renderer instead of software surfaces (#12607)
  * fix(sdl): BFS neighbor walk pop/begin mismatch in addOrUpdateDisplay
    (#12614)
  * fix(sdl): promote first monitor as primary when subset excludes primary
    (#12618)
  * [ci,android] default to only aarch64 (#12622)
  * Fix process exit code on non-pidfd platforms (macOS, BSD)#12534) (#12586)
  * warning cleanups (#12626)
  * fix: prevent PostQuitMessage in RemoteApp WM_DESTROY handler (#12629)
  * [winpr,ntlm] fix message cleanup across the SSPI lifecycle (#12609)
  * Code bug fixes (#12632)
  * Oss fixes (#12633)
  * [client,android] add an option to enable keeping screen on when connected
    (#12630)
  * [client, android] Fix layout overlaps, migrate to AndroidX, and update UI
    components (#12628)
  * Proxy config tests (#12636)
  * Proxy config optional targethost (#12637)
  * [client,sdl] set SDL_HINT_SCREENSAVER_INHIBIT_ACTIVITY_NAME (#12639)
  * Nightly deb fix (#12640, #12641, #12649, #12650, #12642, #12643)
  * [winpr,input] fix korean keyboard mapping (#12646)
  * [client,sdl] set hints before SDL_Init (#12644)
  * Sdl inhibit option (#12647)
  * [client,X11] fix residual race in xf_clipboard_formats_free (#12648)
  * (sdl3): Fix oversized window on HiDPI Wayland (#12635)
  * [cache,bitmap] fix off-by-one in bitmap_cache_put bounds check (#12651)
  * [winpr,sspi] free fields buffer immediately (#12654)
  * [codec,dsp] fix fencepost error in dsp_ima_clamp_step (#12655)
  * RDPECAM MJPEG support
  * Support for FDK-AAC for sound and microphone redirection
  * Support timezones as JSON resources
  * Rely preferably on pkgconfig to pull devel packages instead of
  * A new option /cert that unifies all certificate related options
    (gh#FreeRDP/FreeRDP#5880)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-981=1

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-981=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * freerdp-3.26.0-160000.1.1
    * freerdp-proxy-plugins-debuginfo-3.26.0-160000.1.1
    * libfreerdp3-3-3.26.0-160000.1.1
    * freerdp-sdl-debuginfo-3.26.0-160000.1.1
    * libwinpr3-3-3.26.0-160000.1.1
    * libwinpr3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-debugsource-3.26.0-160000.1.1
    * freerdp-proxy-3.26.0-160000.1.1
    * freerdp-proxy-debuginfo-3.26.0-160000.1.1
    * freerdp-server-3.26.0-160000.1.1
    * libfreerdp3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-server-debuginfo-3.26.0-160000.1.1
    * winpr-devel-3.26.0-160000.1.1
    * freerdp-devel-3.26.0-160000.1.1
    * librdtk0-0-debuginfo-3.26.0-160000.1.1
    * freerdp-sdl-3.26.0-160000.1.1
    * libfreerdp-server-proxy3-3-3.26.0-160000.1.1
    * freerdp-debuginfo-3.26.0-160000.1.1
    * freerdp-wayland-3.26.0-160000.1.1
    * libfreerdp-server-proxy3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-wayland-debuginfo-3.26.0-160000.1.1
    * libuwac0-0-3.26.0-160000.1.1
    * freerdp-proxy-plugins-3.26.0-160000.1.1
    * libuwac0-0-debuginfo-3.26.0-160000.1.1
    * librdtk0-0-3.26.0-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * freerdp-3.26.0-160000.1.1
    * freerdp-proxy-plugins-debuginfo-3.26.0-160000.1.1
    * libfreerdp3-3-3.26.0-160000.1.1
    * freerdp-sdl-debuginfo-3.26.0-160000.1.1
    * libwinpr3-3-3.26.0-160000.1.1
    * libwinpr3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-debugsource-3.26.0-160000.1.1
    * freerdp-proxy-3.26.0-160000.1.1
    * freerdp-proxy-debuginfo-3.26.0-160000.1.1
    * freerdp-server-3.26.0-160000.1.1
    * libfreerdp3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-server-debuginfo-3.26.0-160000.1.1
    * winpr-devel-3.26.0-160000.1.1
    * freerdp-devel-3.26.0-160000.1.1
    * librdtk0-0-debuginfo-3.26.0-160000.1.1
    * freerdp-sdl-3.26.0-160000.1.1
    * libfreerdp-server-proxy3-3-3.26.0-160000.1.1
    * freerdp-debuginfo-3.26.0-160000.1.1
    * freerdp-wayland-3.26.0-160000.1.1
    * libfreerdp-server-proxy3-3-debuginfo-3.26.0-160000.1.1
    * freerdp-wayland-debuginfo-3.26.0-160000.1.1
    * libuwac0-0-3.26.0-160000.1.1
    * freerdp-proxy-plugins-3.26.0-160000.1.1
    * libuwac0-0-debuginfo-3.26.0-160000.1.1
    * librdtk0-0-3.26.0-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-33982.html
  * https://www.suse.com/security/cve/CVE-2026-33985.html
  * https://www.suse.com/security/cve/CVE-2026-33986.html
  * https://www.suse.com/security/cve/CVE-2026-33987.html
  * https://www.suse.com/security/cve/CVE-2026-33995.html
  * https://www.suse.com/security/cve/CVE-2026-40033.html
  * https://www.suse.com/security/cve/CVE-2026-40254.html
  * https://www.suse.com/security/cve/CVE-2026-44420.html
  * https://www.suse.com/security/cve/CVE-2026-44421.html
  * https://www.suse.com/security/cve/CVE-2026-44422.html
  * https://www.suse.com/security/cve/CVE-2026-45700.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1174200
  * https://bugzilla.suse.com/show_bug.cgi?id=1261217
  * https://bugzilla.suse.com/show_bug.cgi?id=1261222
  * https://bugzilla.suse.com/show_bug.cgi?id=1261223
  * https://bugzilla.suse.com/show_bug.cgi?id=1261226
  * https://bugzilla.suse.com/show_bug.cgi?id=1261227
  * https://bugzilla.suse.com/show_bug.cgi?id=1262743
  * https://bugzilla.suse.com/show_bug.cgi?id=1266317
  * https://bugzilla.suse.com/show_bug.cgi?id=1267008
  * https://bugzilla.suse.com/show_bug.cgi?id=1267009
  * https://bugzilla.suse.com/show_bug.cgi?id=1267010
  * https://bugzilla.suse.com/show_bug.cgi?id=1267011





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