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CVE-2026-109942

CVE-2026-109942 · FreeRDP 2.3.0 before 3.32.0 NULL Pointer Dereference via RD Gateway Close Channel Packet

This page contains facts from public vulnerability sources. Check the original advisory before updating.

FreeRDP 2.3.0 before 3.32.0 dereferences a NULL stream in rdg_process_close_packet in libfreerdp/core/gateway/rdg.c because rdg_process_control_packet accepts a header-only PKT_TYPE_CLOSE_CHANNEL packet and passes the null payload without a check. A malicious or compromised RD Gateway can send an eight-byte CLOSE_CHANNEL header to crash a connecting FreeRDP client.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • freerdp

    Versions
    • ≥ 2.3.0, < 3.32.0: Affected (semver)
    • 3.32.0: Not affected (semver)

    Update to 3.32.0

  • freerdp2 Debian:12

    Versions
    • 2.10.0+dfsg1-1
    • 2.10.0+dfsg1-1.1
    • 2.11.2+dfsg1-1
    • 2.11.2+dfsg1-1.1~exp1
    • 2.11.2+dfsg1-1.1~exp2
    • 2.11.5+dfsg1-1
    • 2.11.7+dfsg1-1
    • 2.11.7+dfsg1-2
    • 2.11.7+dfsg1-3
    • 2.11.7+dfsg1-4
    • 2.11.7+dfsg1-5
    • 2.11.7+dfsg1-6
    • 2.11.7+dfsg1-6~deb12u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp3 Debian:13

    Versions
    • 3.15.0+dfsg-2.1
    • 3.15.0+dfsg-2.1+deb13u1
    • 3.15.0+dfsg-2.1+deb13u2
    • 3.15.0+dfsg-2.1+deb13u3
    • 3.16.0+dfsg-1
    • 3.16.0+dfsg-2
    • 3.17.0+dfsg-1
    • 3.17.1+dfsg-1
    • 3.17.1+dfsg-2
    • 3.17.2+dfsg-1
    • 3.17.2+dfsg-2
    • 3.17.2+dfsg-3
    • 3.18.0+dfsg-1
    • 3.19.0+dfsg-1
    • 3.19.1+dfsg-1
    • 3.20.0+dfsg-1
    • 3.20.2+dfsg-1
    • 3.21.0+dfsg-1
    • 3.22.0+dfsg-1
    • 3.22.0+dfsg-1~bpo13+0
    • 3.22.0+dfsg-1~bpo13+1
    • 3.22.0+dfsg-3
    • 3.23.0+dfsg-1
    • 3.23.0+dfsg-1~bpo13+1
    • 3.24.0+dfsg-1
    • 3.24.0+dfsg-2
    • 3.24.1+dfsg-1
    • 3.24.2+dfsg-1
    • 3.24.2+dfsg-1~bpo13+1
    • 3.25.0+dfsg-1
    • 3.25.0+dfsg-2
    • 3.25.0+dfsg-3
    • 3.25.0+dfsg-4
    • 3.25.0+dfsg-5
    • 3.26.0+dfsg-1
    • 3.26.0+dfsg-1~bpo13+1
    • 3.27.0+dfsg-1
    • 3.27.1+dfsg-1
    • 3.28.0+dfsg-1
    • 3.28.0+dfsg-2
    • 3.29.0+dfsg-1
    • 3.30.0+dfsg-1
    • 3.30.0+dfsg-1~bpo13+1
    • 3.31.0+dfsg-1
    • 3.31.1+dfsg-1
    • 3.31.1+dfsg-1~bpo13+1
    • 3.32.0+dfsg-1
    • 3.32.1+dfsg-1
    • 3.32.1+dfsg-1~bpo13+1
    • 3.32.2+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp3 Debian:14

    Versions
    • 3.15.0+dfsg-2.1
    • 3.16.0+dfsg-1
    • 3.16.0+dfsg-2
    • 3.17.0+dfsg-1
    • 3.17.1+dfsg-1
    • 3.17.1+dfsg-2
    • 3.17.2+dfsg-1
    • 3.17.2+dfsg-2
    • 3.17.2+dfsg-3
    • 3.18.0+dfsg-1
    • 3.19.0+dfsg-1
    • 3.19.1+dfsg-1
    • 3.20.0+dfsg-1
    • 3.20.2+dfsg-1
    • 3.21.0+dfsg-1
    • 3.22.0+dfsg-1
    • 3.22.0+dfsg-1~bpo13+0
    • 3.22.0+dfsg-1~bpo13+1
    • 3.22.0+dfsg-3
    • 3.23.0+dfsg-1
    • 3.23.0+dfsg-1~bpo13+1
    • 3.24.0+dfsg-1
    • 3.24.0+dfsg-2
    • 3.24.1+dfsg-1
    • 3.24.2+dfsg-1
    • 3.24.2+dfsg-1~bpo13+1
    • 3.25.0+dfsg-1
    • 3.25.0+dfsg-2
    • 3.25.0+dfsg-3
    • 3.25.0+dfsg-4
    • 3.25.0+dfsg-5
    • 3.26.0+dfsg-1
    • 3.26.0+dfsg-1~bpo13+1
    • 3.27.0+dfsg-1
    • 3.27.1+dfsg-1
    • 3.28.0+dfsg-1
    • 3.28.0+dfsg-2
    • 3.29.0+dfsg-1
    • 3.30.0+dfsg-1
    • 3.30.0+dfsg-1~bpo13+1
    • 3.31.0+dfsg-1
    • 3.31.1+dfsg-1
    • 3.31.1+dfsg-1~bpo13+1
    Affected ranges
    • ECOSYSTEM: < 3.32.0+dfsg-1

    Update to 3.32.0+dfsg-1

  • freerdp Ubuntu:16.04:LTS

    Versions
    • 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1
    • 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2
    • 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3
    • 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp2 Ubuntu:Pro:18.04:LTS

    Versions
    • 2.0.0~git20170725.1.1648deb+dfsg1-1
    • 2.0.0~git20170725.1.1648deb+dfsg1-5
    • 2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1
    • 2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2
    • 2.0.0~git20170725.1.1648deb+dfsg1-6
    • 2.0.0~git20170725.1.1648deb+dfsg1-6build1
    • 2.0.0~git20170725.1.1648deb+dfsg1-7
    • 2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
    • 2.1.1+dfsg1-0ubuntu0.18.04.1
    • 2.2.0+dfsg1-0ubuntu0.18.04.1
    • 2.2.0+dfsg1-0ubuntu0.18.04.2
    • 2.2.0+dfsg1-0ubuntu0.18.04.3
    • 2.2.0+dfsg1-0ubuntu0.18.04.4
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm2
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm3
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm4
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm5
    • 2.2.0+dfsg1-0ubuntu0.18.04.4+esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp Ubuntu:18.04:LTS

    Versions
    • 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1
    • 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1
    • 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp2 Ubuntu:Pro:20.04:LTS

    Versions
    • 2.0.0~git20190204.1.2693389a+dfsg1-1
    • 2.0.0~git20190204.1.2693389a+dfsg1-2
    • 2.0.0~git20190204.1.2693389a+dfsg1-2build1
    • 2.0.0~git20190204.1.2693389a+dfsg1-2build2
    • 2.1.1+dfsg1-0ubuntu0.20.04.1
    • 2.2.0+dfsg1-0ubuntu0.20.04.1
    • 2.2.0+dfsg1-0ubuntu0.20.04.2
    • 2.2.0+dfsg1-0ubuntu0.20.04.3
    • 2.2.0+dfsg1-0ubuntu0.20.04.4
    • 2.2.0+dfsg1-0ubuntu0.20.04.5
    • 2.2.0+dfsg1-0ubuntu0.20.04.6
    • 2.6.1+dfsg1-0ubuntu0.20.04.1
    • 2.6.1+dfsg1-0ubuntu0.20.04.2
    • 2.6.1+dfsg1-0ubuntu0.20.04.2+esm1
    • 2.6.1+dfsg1-0ubuntu0.20.04.2+esm2
    • 2.6.1+dfsg1-0ubuntu0.20.04.2+esm3
    • 2.6.1+dfsg1-0ubuntu0.20.04.2+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp2 Ubuntu:22.04:LTS

    Versions
    • 2.3.0+dfsg1-2build1
    • 2.3.0+dfsg1-2ubuntu1
    • 2.3.0+dfsg1-2ubuntu2
    • 2.4.1+dfsg1-1
    • 2.4.1+dfsg1-1ubuntu1
    • 2.4.1+dfsg1-1ubuntu2
    • 2.5.0+dfsg1-1
    • 2.6.0+dfsg1-1
    • 2.6.1+dfsg1-1
    • 2.6.1+dfsg1-3
    • 2.6.1+dfsg1-3ubuntu1
    • 2.6.1+dfsg1-3ubuntu2
    • 2.6.1+dfsg1-3ubuntu2.1
    • 2.6.1+dfsg1-3ubuntu2.2
    • 2.6.1+dfsg1-3ubuntu2.3
    • 2.6.1+dfsg1-3ubuntu2.4
    • 2.6.1+dfsg1-3ubuntu2.5
    • 2.6.1+dfsg1-3ubuntu2.6
    • 2.6.1+dfsg1-3ubuntu2.7
    • 2.6.1+dfsg1-3ubuntu2.8
    • 2.6.1+dfsg1-3ubuntu2.9
    • 2.6.1+dfsg1-3ubuntu2.10
    • 2.6.1+dfsg1-3ubuntu2.11
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp3 Ubuntu:24.04:LTS

    Versions
    • 3.4.0+dfsg1-0ubuntu2
    • 3.4.0+dfsg1-0ubuntu3
    • 3.4.0+dfsg1-0ubuntu4
    • 3.5.0+dfsg1-0ubuntu1
    • 3.5.1+dfsg1-0ubuntu1
    • 3.5.1+dfsg1-0ubuntu1.1
    • 3.5.1+dfsg1-0ubuntu1.2
    • 3.5.1+dfsg1-0ubuntu1.4
    • 3.5.1+dfsg1-0ubuntu1.5
    • 3.5.1+dfsg1-0ubuntu1.6
    • 3.30.0+dfsg-0ubuntu0.24.04.1
    • 3.30.0+dfsg-0ubuntu0.24.04.2
    • 3.31.0+dfsg-0ubuntu0.24.04.1
    Affected ranges
    • ECOSYSTEM: < 3.32.0+dfsg-0ubuntu0.24.04.1

    Update to 3.32.0+dfsg-0ubuntu0.24.04.1

  • freerdp2 Ubuntu:Pro:24.04:LTS

    Versions
    • 2.10.0+dfsg1-1.1ubuntu1
    • 2.11.2+dfsg1-1
    • 2.11.2+dfsg1-1build1
    • 2.11.2+dfsg1-1build3
    • 2.11.5+dfsg1-1build1
    • 2.11.5+dfsg1-1build2
    • 2.11.5+dfsg1-1ubuntu0.1~esm1
    • 2.11.5+dfsg1-1ubuntu0.1~esm2
    • 2.11.5+dfsg1-1ubuntu0.1~esm3
    • 2.11.5+dfsg1-1ubuntu0.1~esm4
    • 2.11.5+dfsg1-1ubuntu0.1~esm5
    • 2.11.5+dfsg1-1ubuntu0.1~esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • freerdp3 Ubuntu:26.04:LTS

    Versions
    • 3.16.0+dfsg-2
    • 3.18.0+dfsg-1ubuntu1
    • 3.19.0+dfsg-1
    • 3.19.1+dfsg-1
    • 3.20.0+dfsg-1
    • 3.20.2+dfsg-1
    • 3.21.0+dfsg-1
    • 3.22.0+dfsg-1
    • 3.24.1+dfsg-1ubuntu1
    • 3.24.2+dfsg-1ubuntu1
    • 3.24.2+dfsg-1ubuntu1.1
    • 3.30.0+dfsg-0ubuntu0.26.04.1
    • 3.30.0+dfsg-0ubuntu0.26.04.2
    • 3.31.0+dfsg-0ubuntu0.26.04.1
    Affected ranges
    • ECOSYSTEM: < 3.32.0+dfsg-0ubuntu0.26.04.1

    Update to 3.32.0+dfsg-0ubuntu0.26.04.1

Original sources

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