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CVE-2026-64834

CVE-2026-64834 · FFmpeg 0.6.3 - 8.1.2 Infinite Loop DoS via RTP/ASF Demuxer

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

FFmpeg versions 0.6.3 through 8.1.2 contain an infinite loop vulnerability in the RTP/ASF demuxer within libavformat/rtpdec_asf.c that allows remote attackers to cause denial of service by sending a crafted RTP/ASF stream. The rtp_asf_fix_header function fails to validate a minimum chunksize when iterating over ASF objects, causing the loop pointer to never advance when a chunksize is smaller than the 24-byte minimum ASF object header size, resulting in CPU exhaustion that denies service to legitimate users.

CVSS 8.7 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • ffmpeg

    Versions
    • ≥ 0.6.3, ≤ 8.1.2: Affected (semver)
    • 11d5f475be95d22d5f0692220cc772b116abc632: Affected (git)

    No fix published

  • ffmpeg Debian:12

    Versions
    • 7:5.1.3-1
    • 7:5.1.3-2
    • 7:5.1.4-0+deb12u1
    • 7:5.1.5-0+deb12u1
    • 7:5.1.6-0+deb12u1
    • 7:5.1.7-0+deb12u1
    • 7:5.1.8-0+deb12u1
    • 7:5.1.9-0+deb12u1
    • 7:6.0-1
    • 7:6.0-2
    • 7:6.0-3
    • 7:6.0-4
    • 7:6.0-5
    • 7:6.0-6
    • 7:6.0-7
    • 7:6.0-8
    • 7:6.0-9
    • 7:6.1-1
    • 7:6.1-2
    • 7:6.1-3
    • 7:6.1-4
    • 7:6.1-5
    • 7:6.1.1-1
    • 7:6.1.1-2
    • 7:6.1.1-3
    • 7:6.1.1-4
    • 7:6.1.1-5
    • 7:7.0-1
    • 7:7.0.1-1
    • 7:7.0.1-2
    • 7:7.0.1-3
    • 7:7.0.1-4
    • 7:7.0.1-5
    • 7:7.0.2-1
    • 7:7.0.2-2
    • 7:7.0.2-3
    • 7:7.1-1
    • 7:7.1-2
    • 7:7.1-3
    • 7:7.1-4
    • 7:7.1.1-1
    • 7:7.1.2-1
    • 7:7.1.3-1
    • 7:8.0-1
    • 7:8.0-2
    • 7:8.0.1-1
    • 7:8.0.1-2
    • 7:8.0.1-3
    • 7:8.1-1
    • 7:8.1-2
    • 7:8.1-3
    • 7:8.1.1-1
    • 7:8.1.1-2
    • 7:8.1.1-3
    • 7:8.1.1-4
    • 7:8.1.2-1
    • 7:8.1.2-2
    • 7:9.0-1
    • 7:9.0.1-1
    • 7:9.0.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ffmpeg Debian:13

    Versions
    • 7:7.1.1-1
    • 7:7.1.2-0+deb13u1
    • 7:7.1.2-1
    • 7:7.1.3-0+deb13u1
    • 7:7.1.3-1
    • 7:7.1.4-0+deb13u1
    • 7:7.1.5-0+deb13u1
    • 7:8.0-1
    • 7:8.0-2
    • 7:8.0.1-1
    • 7:8.0.1-2
    • 7:8.0.1-3
    • 7:8.1-1
    • 7:8.1-2
    • 7:8.1-3
    • 7:8.1.1-1
    • 7:8.1.1-2
    • 7:8.1.1-3
    • 7:8.1.1-4
    • 7:8.1.2-1
    • 7:8.1.2-2
    • 7:9.0-1
    • 7:9.0.1-1
    • 7:9.0.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ffmpeg Debian:14

    Versions
    • 7:7.1.1-1
    • 7:7.1.2-1
    • 7:7.1.3-1
    • 7:8.0-1
    • 7:8.0-2
    • 7:8.0.1-1
    • 7:8.0.1-2
    • 7:8.0.1-3
    • 7:8.1-1
    • 7:8.1-2
    • 7:8.1-3
    • 7:8.1.1-1
    • 7:8.1.1-2
    • 7:8.1.1-3
    • 7:8.1.1-4
    • 7:8.1.2-1
    • 7:8.1.2-2
    • 7:9.0-1
    • 7:9.0.1-1
    Affected ranges
    • ECOSYSTEM: < 7:9.0.2-1

    Update to 7:9.0.2-1

  • libav Ubuntu:Pro:14.04:LTS

    Versions
    • 6:0.8.7-1ubuntu2
    • 6:9.10-1ubuntu1
    • 6:9.10-1ubuntu2
    • 6:9.10-1ubuntu5
    • 6:9.10-1ubuntu6
    • 6:9.10-1ubuntu7
    • 6:9.11-2ubuntu1
    • 6:9.11-2ubuntu2
    • 6:9.13-0ubuntu0.14.04.1
    • 6:9.14-0ubuntu0.14.04.1
    • 6:9.16-0ubuntu0.14.04.1
    • 6:9.18-0ubuntu0.14.04.1
    • 6:9.20-0ubuntu0.14.04.1
    • 6:9.20-0ubuntu0.14.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ffmpeg Ubuntu:Pro:16.04:LTS

    Versions
    • 7:2.7.2-1build1
    • 7:2.8.1-1ubuntu1
    • 7:2.8.2-1ubuntu1
    • 7:2.8.3-1
    • 7:2.8.4-1
    • 7:2.8.4-1ubuntu1
    • 7:2.8.4-1ubuntu2
    • 7:2.8.4-1ubuntu3
    • 7:2.8.4-1ubuntu4
    • 7:2.8.6-1ubuntu1
    • 7:2.8.6-1ubuntu2
    • 7:2.8.8-0ubuntu0.16.04.1
    • 7:2.8.10-0ubuntu0.16.04.1
    • 7:2.8.11-0ubuntu0.16.04.1
    • 7:2.8.14-0ubuntu0.16.04.1
    • 7:2.8.15-0ubuntu0.16.04.1
    • 7:2.8.15-0ubuntu0.16.04.1+esm1
    • 7:2.8.17-0ubuntu0.1
    • 7:2.8.17-0ubuntu0.1+esm1
    • 7:2.8.17-0ubuntu0.1+esm2
    • 7:2.8.17-0ubuntu0.1+esm3
    • 7:2.8.17-0ubuntu0.1+esm4
    • 7:2.8.17-0ubuntu0.1+esm5
    • 7:2.8.17-0ubuntu0.1+esm6
    • 7:2.8.17-0ubuntu0.1+esm7
    • 7:2.8.17-0ubuntu0.1+esm8
    • 7:2.8.17-0ubuntu0.1+esm9
    • 7:2.8.17-0ubuntu0.1+esm10
    • 7:2.8.17-0ubuntu0.1+esm11
    • 7:2.8.17-0ubuntu0.1+esm12
    • 7:2.8.17-0ubuntu0.1+esm13
    • 7:2.8.17-0ubuntu0.1+esm14
    • 7:2.8.17-0ubuntu0.1+esm15
    • 7:2.8.17-0ubuntu0.1+esm16
    Affected ranges
    • ECOSYSTEM: < 7:2.8.17-0ubuntu0.1+esm17

    Update to 7:2.8.17-0ubuntu0.1+esm17

  • ffmpeg Ubuntu:Pro:18.04:LTS

    Versions
    • 7:3.3.4-2
    • 7:3.3.4-2build3
    • 7:3.4-2ubuntu2
    • 7:3.4-4
    • 7:3.4-4build1
    • 7:3.4.1-1
    • 7:3.4.1-1build1
    • 7:3.4.2-1
    • 7:3.4.2-1build1
    • 7:3.4.2-2
    • 7:3.4.4-0ubuntu0.18.04.1
    • 7:3.4.6-0ubuntu0.18.04.1
    • 7:3.4.8-0ubuntu0.2
    • 7:3.4.11-0ubuntu0.1
    • 7:3.4.11-0ubuntu0.1+esm1
    • 7:3.4.11-0ubuntu0.1+esm2
    • 7:3.4.11-0ubuntu0.1+esm3
    • 7:3.4.11-0ubuntu0.1+esm4
    • 7:3.4.11-0ubuntu0.1+esm5
    • 7:3.4.11-0ubuntu0.1+esm6
    • 7:3.4.11-0ubuntu0.1+esm7
    • 7:3.4.11-0ubuntu0.1+esm8
    • 7:3.4.11-0ubuntu0.1+esm9
    • 7:3.4.11-0ubuntu0.1+esm10
    • 7:3.4.11-0ubuntu0.1+esm11
    • 7:3.4.11-0ubuntu0.1+esm12
    • 7:3.4.11-0ubuntu0.1+esm13
    • 7:3.4.11-0ubuntu0.1+esm14
    Affected ranges
    • ECOSYSTEM: < 7:3.4.11-0ubuntu0.1+esm15

    Update to 7:3.4.11-0ubuntu0.1+esm15

  • ffmpeg Ubuntu:Pro:20.04:LTS

    Versions
    • 7:4.1.4-1build2
    • 7:4.2.1-2
    • 7:4.2.1-2ubuntu1
    • 7:4.2.2-1build1
    • 7:4.2.2-1ubuntu1
    • 7:4.2.4-1ubuntu0.1
    • 7:4.2.4-1ubuntu0.1+esm1
    • 7:4.2.7-0ubuntu0.1
    • 7:4.2.7-0ubuntu0.1+esm1
    • 7:4.2.7-0ubuntu0.1+esm2
    • 7:4.2.7-0ubuntu0.1+esm3
    • 7:4.2.7-0ubuntu0.1+esm4
    • 7:4.2.7-0ubuntu0.1+esm5
    • 7:4.2.7-0ubuntu0.1+esm6
    • 7:4.2.7-0ubuntu0.1+esm7
    • 7:4.2.7-0ubuntu0.1+esm8
    • 7:4.2.7-0ubuntu0.1+esm9
    • 7:4.2.7-0ubuntu0.1+esm10
    • 7:4.2.7-0ubuntu0.1+esm11
    • 7:4.2.7-0ubuntu0.1+esm12
    • 7:4.2.7-0ubuntu0.1+esm13
    • 7:4.2.7-0ubuntu0.1+esm14
    • 7:4.2.7-0ubuntu0.1+esm15
    Affected ranges
    • ECOSYSTEM: < 7:4.2.7-0ubuntu0.1+esm16

    Update to 7:4.2.7-0ubuntu0.1+esm16

  • ffmpeg Ubuntu:Pro:22.04:LTS

    Versions
    • 7:4.4-6ubuntu5
    • 7:4.4.1-2ubuntu1
    • 7:4.4.1-3ubuntu1
    • 7:4.4.1-3ubuntu2
    • 7:4.4.1-3ubuntu3
    • 7:4.4.1-3ubuntu5
    • 7:4.4.2-0ubuntu0.22.04.1
    • 7:4.4.2-0ubuntu0.22.04.1+esm1
    • 7:4.4.2-0ubuntu0.22.04.1+esm2
    • 7:4.4.2-0ubuntu0.22.04.1+esm3
    • 7:4.4.2-0ubuntu0.22.04.1+esm4
    • 7:4.4.2-0ubuntu0.22.04.1+esm5
    • 7:4.4.2-0ubuntu0.22.04.1+esm6
    • 7:4.4.2-0ubuntu0.22.04.1+esm7
    • 7:4.4.2-0ubuntu0.22.04.1+esm8
    • 7:4.4.2-0ubuntu0.22.04.1+esm9
    • 7:4.4.2-0ubuntu0.22.04.1+esm10
    • 7:4.4.2-0ubuntu0.22.04.1+esm11
    • 7:4.4.2-0ubuntu0.22.04.1+esm12
    • 7:4.4.2-0ubuntu0.22.04.1+esm13
    • 7:4.4.2-0ubuntu0.22.04.1+esm14
    Affected ranges
    • ECOSYSTEM: < 7:4.4.2-0ubuntu0.22.04.1+esm15

    Update to 7:4.4.2-0ubuntu0.22.04.1+esm15

  • ffmpeg Ubuntu:Pro:24.04:LTS

    Versions
    • 7:6.0-6ubuntu1
    • 7:6.0-9ubuntu1
    • 7:6.1-2ubuntu1
    • 7:6.1-3ubuntu1
    • 7:6.1-4ubuntu1
    • 7:6.1-5ubuntu1
    • 7:6.1.1-1ubuntu1
    • 7:6.1.1-3ubuntu1
    • 7:6.1.1-3ubuntu5
    • 7:6.1.1-3ubuntu5+esm1
    • 7:6.1.1-3ubuntu5+esm2
    • 7:6.1.1-3ubuntu5+esm3
    • 7:6.1.1-3ubuntu5+esm4
    • 7:6.1.1-3ubuntu5+esm5
    • 7:6.1.1-3ubuntu5+esm6
    • 7:6.1.1-3ubuntu5+esm7
    • 7:6.1.1-3ubuntu5+esm8
    • 7:6.1.1-3ubuntu5+esm10
    • 7:6.1.1-3ubuntu5+esm11
    • 7:6.1.1-3ubuntu5+esm12
    Affected ranges
    • ECOSYSTEM: < 7:6.1.1-3ubuntu5+esm13

    Update to 7:6.1.1-3ubuntu5+esm13

  • ffmpeg Ubuntu:26.10

    Versions
    • 7:8.0.1-3ubuntu2
    • 7:8.1-3ubuntu3
    • 7:8.1.2-2ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ffmpeg Ubuntu:Pro:26.04:LTS

    Versions
    • 7:7.1.1-1ubuntu4
    • 7:7.1.2-1ubuntu3
    • 7:7.1.2-1ubuntu4
    • 7:7.1.3-1ubuntu1
    • 7:8.0.1-2ubuntu1
    • 7:8.0.1-3ubuntu1
    • 7:8.0.1-3ubuntu2
    • 7:8.0.1-3ubuntu2+esm1
    • 7:8.0.1-3ubuntu2+esm3
    Affected ranges
    • ECOSYSTEM: < 7:8.0.1-3ubuntu2+esm4

    Update to 7:8.0.1-3ubuntu2+esm4

Original sources

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