CVE-2026-57158
Public on 2026-07-10
Modified on 2026-07-10
Description
planar_decompress_plane_rle_only: heap OOB read — incomplete fix for CVE-2026-23530
The fix for CVE-2026-23530 (GHSA-r4hv-852m-fq7p) correctly adds dimension guards
at the entry point of freerdp_bitmap_decompress_planar but is incomplete in scope.
planar_decompress_plane_rle_only dereferences *srcp before validating that
srcp is within SrcSize. A malicious server can reach this path via a truncated
RLE planar payload in RDPGFX_CMDID_WIRETOSURFACE_1.
The fix for CVE-2026-23530 (GHSA-r4hv-852m-fq7p) correctly adds dimension guards
at the entry point of freerdp_bitmap_decompress_planar but is incomplete in scope.
planar_decompress_plane_rle_only dereferences *srcp before validating that
srcp is within SrcSize. A malicious server can reach this path via a truncated
RLE planar payload in RDPGFX_CMDID_WIRETOSURFACE_1.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | freerdp | Pending Fix | ||
| Amazon Linux 2023 | freerdp | Pending Fix |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |