SB2026071343 - Fedora 44 update for freerdp
Published: July 13, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2026-57156)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service or execute arbitrary code.
The vulnerability exists due to integer overflow leading to heap-based buffer overflow in libfreerdp/core/orders.c when parsing Orders Delta Points data from a malicious RDP peer. A remote attacker can send a specially crafted value to trigger heap memory corruption to cause a denial of service or execute arbitrary code.
Only 32-bit builds are vulnerable.
2) Out-of-bounds read (CVE-ID: CVE-2026-57157)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in the RDCamera_Device_Enumerator dynamic virtual channel handlers when parsing attacker-supplied DeviceName or VirtualChannelName fields without a NUL terminator. A remote attacker can send a specially crafted channel notification to cause a denial of service.
Direct information disclosure is limited because the out-of-bounds value is only used in a comparison, and the past-allocation read requires a message that exactly fills the 4096-byte receive buffer.
3) Out-of-bounds read (CVE-ID: CVE-2026-57158)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in planar_decompress_plane_rle_only when processing a truncated RLE planar payload in RDPGFX_CMDID_WIRETOSURFACE_1. A remote attacker can send a specially crafted WireToSurface packet with codecId=PLANAR and a payload truncated by 1 byte to cause a denial of service.
No user interaction beyond connecting to the server is required.
Remediation
Install update from vendor's website.