SUSE-SU-2026:1129-1 - Vulnerability-Lookup

SUSE-SU-2026:1129-1

Vulnerability from csaf_suse - Published: 2026-03-27 15:05 - Updated: 2026-03-27 15:05

Summary

Security update for freerdp

Severity

Important

Notes

Title of the patch: Security update for freerdp

Description of the patch: This update for freerdp fixes the following issues: - CVE-2026-26271: Buffer Overread in FreeRDP Icon Processing (bsc#1258979). - CVE-2026-26955: Out-of-bounds Write in freerdp (bsc#1258982). - CVE-2026-26965: Out-of-bounds Write in freerdp (bsc#1258985). - CVE-2026-31806: improper validation of server messages can lead to a heap buffer overflow and arbitrary code execution (bsc#1259653). - CVE-2026-31883: crafted RDPSND audio format and wave data can cause a heap buffer overflow write (bsc#1259679). - CVE-2026-31885: unchecked predictor can lead to an out-of-bounds read (bsc#1259686).

Patchnames: SUSE-2026-1129,SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-1129

Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).

CVE-2026-26271

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-26955

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-26965

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-31806

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-31883

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-31885

7.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

References

URL

Category

	https://www.suse.com/support/security/rating/	external
	https://ftp.suse.com/pub/projects/security/csaf/s…	self
	https://www.suse.com/support/update/announcement/…	self
	https://lists.suse.com/pipermail/sle-security-upd…	self
	https://bugzilla.suse.com/1258979	self
	https://bugzilla.suse.com/1258982	self
	https://bugzilla.suse.com/1258985	self
	https://bugzilla.suse.com/1259653	self
	https://bugzilla.suse.com/1259679	self
	https://bugzilla.suse.com/1259686	self
	https://www.suse.com/security/cve/CVE-2026-26271/	self
	https://www.suse.com/security/cve/CVE-2026-26955/	self
	https://www.suse.com/security/cve/CVE-2026-26965/	self
	https://www.suse.com/security/cve/CVE-2026-31806/	self
	https://www.suse.com/security/cve/CVE-2026-31883/	self
	https://www.suse.com/security/cve/CVE-2026-31885/	self
	https://www.suse.com/security/cve/CVE-2026-26271	external
	https://bugzilla.suse.com/1258979	external
	https://www.suse.com/security/cve/CVE-2026-26955	external
	https://bugzilla.suse.com/1258982	external
	https://www.suse.com/security/cve/CVE-2026-26965	external
	https://bugzilla.suse.com/1258985	external
	https://www.suse.com/security/cve/CVE-2026-31806	external
	https://bugzilla.suse.com/1259653	external
	https://www.suse.com/security/cve/CVE-2026-31883	external
	https://bugzilla.suse.com/1259679	external
	https://www.suse.com/security/cve/CVE-2026-31885	external
	https://bugzilla.suse.com/1259686	external

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          "text": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, in the RLE planar decode path, `planar_decompress_plane_rle()` writes into `pDstData` at `((nYDst+y) * nDstStep) + (4*nXDst) + nChannel` without verifying that `(nYDst+nSrcHeight)` fits in the destination height or that `(nXDst+nSrcWidth)` fits in the destination stride. When `TempFormat != DstFormat`, `pDstData` becomes `planar-\u003epTempData` (sized for the desktop), while `nYDst` is only validated against the **surface** by `is_within_surface()`. A malicious RDP server can exploit this to perform a heap out-of-bounds write with attacker-controlled offset and pixel data on any connecting FreeRDP client. The OOB write reaches up to 132,096 bytes past the temp buffer end, and  on the brk heap (desktop \u2264 128x128), an adjacent `NSC_CONTEXT` struct\u0027s `decode` function pointer is overwritten with attacker-controlled pixel data - control-flow-relevant corruption (function pointer overwritten) demonstrated under deterministic heap layout (`nsc-\u003edecode = 0xFF414141FF414141`). Version 3.23.0 fixes the vulnerability.",
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CVE-2026-31885 (GCVE-0-2026-31885)

Vulnerability from cvelistv5 – Published: 2026-03-13 17:38 – Updated: 2026-03-16 15:32

Title

FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in MS-ADPCM and IMA-ADPCM decoders due to unchecked predictor and step_index values from input data. This vulnerability is fixed in 3.24.0.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-125 - Out-of-bounds Read

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/16df230…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	FreeRDP	FreeRDP	Affected: < 3.24.0

Show details on NVD website

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CVE-2026-31883 (GCVE-0-2026-31883)

Vulnerability from cvelistv5 – Published: 2026-03-13 17:35 – Updated: 2026-03-16 17:02

Title

FreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an astronomical number of iterations. This vulnerability is fixed in 3.24.0.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE

CWE-191 - Integer Underflow (Wrap or Wraparound)
CWE-122 - Heap-based Buffer Overflow

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/16df230…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
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Show details on NVD website

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          "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-85x9-4xxp-xhm5"
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CVE-2026-31806 (GCVE-0-2026-31806)

Vulnerability from cvelistv5 – Published: 2026-03-13 17:40 – Updated: 2026-03-15 01:51

Title

FreeRDP has a Heap Buffer Overflow in nsc_process_message() via Unchecked SURFACE_BITS_COMMAND Bitmap Dimensions

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, the gdi_surface_bits() function processes SURFACE_BITS_COMMAND messages sent by the RDP server. When the command is handled using NSCodec, the bmp.width and bmp.height values provided by the server are not properly validated against the actual desktop dimensions. A malicious RDP server can supply crafted bmp.width and bmp.height values that exceed the expected surface size. Because these values are used during bitmap decoding and memory operations without proper bounds checking, this can lead to a heap buffer overflow. Since the attacker can also control the associated pixel data transmitted by the server, the overflow may be exploitable to overwrite adjacent heap memory. This vulnerability is fixed in 3.24.0.

Severity ?

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/83d9aed…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	FreeRDP	FreeRDP	Affected: < 3.24.0

Show details on NVD website

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CVE-2026-26271 (GCVE-0-2026-26271)

Vulnerability from cvelistv5 – Published: 2026-02-25 20:40 – Updated: 2026-02-26 15:50

Title

Buffer Overread in FreeRDP Icon Processing

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by crafted RDP Window Icon (TS_ICON_INFO) data. The bug is reachable over the network when a client processes icon data from an RDP server (or from a man-in-the-middle). Version 3.23.0 fixes the issue.

Severity ?

5.5 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

CWE

CWE-126 - Buffer Over-read

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/f5e2040…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	FreeRDP	FreeRDP	Affected: < 3.23.0

Show details on NVD website

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CVE-2026-26955 (GCVE-0-2026-26955)

Vulnerability from cvelistv5 – Published: 2026-02-25 20:47 – Updated: 2026-02-26 20:30

Title

FreeRDP has Out-of-bounds Write

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a malicious RDP server can trigger a heap buffer overflow in FreeRDP clients using the GDI surface pipeline (e.g., `xfreerdp`) by sending an RDPGFX ClearCodec surface command with an out-of-bounds destination rectangle. The `gdi_SurfaceCommand_ClearCodec()` handler does not call `is_within_surface()` to validate the command rectangle against the destination surface dimensions, allowing attacker-controlled `cmd->left`/`cmd->top` (and subcodec rectangle offsets) to reach image copy routines that write into `surface->data` without bounds enforcement. The OOB write corrupts an adjacent `gdiGfxSurface` struct's `codecs*` pointer with attacker-controlled pixel data, and corruption of `codecs*` is sufficient to reach an indirect function pointer call (`NSC_CONTEXT.decode` at `nsc.c:500`) on a subsequent codec command — full instruction pointer (RIP) control demonstrated in exploitability harness. Users should upgrade to version 3.23.0 to receive a patch.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/7d8fdce…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	FreeRDP	FreeRDP	Affected: < 3.23.0

Show details on NVD website

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CVE-2026-26965 (GCVE-0-2026-26965)

Vulnerability from cvelistv5 – Published: 2026-02-25 20:59 – Updated: 2026-02-26 14:44

Title

FreeRDP has Out-of-bounds Write

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, in the RLE planar decode path, `planar_decompress_plane_rle()` writes into `pDstData` at `((nYDst+y) * nDstStep) + (4*nXDst) + nChannel` without verifying that `(nYDst+nSrcHeight)` fits in the destination height or that `(nXDst+nSrcWidth)` fits in the destination stride. When `TempFormat != DstFormat`, `pDstData` becomes `planar->pTempData` (sized for the desktop), while `nYDst` is only validated against the **surface** by `is_within_surface()`. A malicious RDP server can exploit this to perform a heap out-of-bounds write with attacker-controlled offset and pixel data on any connecting FreeRDP client. The OOB write reaches up to 132,096 bytes past the temp buffer end, and on the brk heap (desktop ≤ 128×128), an adjacent `NSC_CONTEXT` struct's `decode` function pointer is overwritten with attacker-controlled pixel data — control-flow–relevant corruption (function pointer overwritten) demonstrated under deterministic heap layout (`nsc->decode = 0xFF414141FF414141`). Version 3.23.0 fixes the vulnerability.

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M

References

URL

Tags

	https://github.com/FreeRDP/FreeRDP/security/advis…	x_refsource_CONFIRM
	https://github.com/FreeRDP/FreeRDP/commit/a0be5cb…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	FreeRDP	FreeRDP	Affected: < 3.23.0

Show details on NVD website

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            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T20:59:17.828Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5vgf-mw4f-r33h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5vgf-mw4f-r33h"
        },
        {
          "name": "https://github.com/FreeRDP/FreeRDP/commit/a0be5cb87d760bb1c803ad1bb835aa1e73e62abc",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FreeRDP/FreeRDP/commit/a0be5cb87d760bb1c803ad1bb835aa1e73e62abc"
        }
      ],
      "source": {
        "advisory": "GHSA-5vgf-mw4f-r33h",
        "discovery": "UNKNOWN"
      },
      "title": "FreeRDP has Out-of-bounds Write"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-26965",
    "datePublished": "2026-02-25T20:59:17.828Z",
    "dateReserved": "2026-02-16T22:20:28.612Z",
    "dateUpdated": "2026-02-26T14:44:04.865Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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Sightings

Author	Source	Type	Date

Nomenclature

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.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.