CVE-2026-73434

Summary

A flaw was found in GStreamer gst-plugins-good (avidemux). In gst_avi_demux_riff_parse_vprp(), the number of available gst_riff_vprp_video_field_desc entries is calculated by dividing the remaining buffer size by the attacker-controlled vprp->fields value, rather than by sizeof(gst_riff_vprp_video_field_desc). This can cause the parser to treat more field descriptors as available than fit in the input buffer, resulting in out-of-bounds reads. Processing a crafted AVI via playbin/decodebin can crash the application (denial of service). Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

Affected Software

VendorProductVersion RangeStatus
GStreamergst-plugins-good0 < 1.28.6affected
Red HatRed Hat Enterprise Linux 100:1.26.7-2.el10_2.5 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:1.24.11-1.el10_0.4 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:1.10.4-4.el7_9.3 < *unaffected
Red HatRed Hat Enterprise Linux 80:1.16.1-7.el8_10.3 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:1.16.1-4.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:1.16.1-4.el8_4.2 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:1.16.1-4.el8_6.3 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On0:1.16.1-4.el8_6.3 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:1.16.1-5.el8_8.3 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:1.16.1-5.el8_8.3 < *unaffected
Red HatRed Hat Enterprise Linux 90:1.22.12-7.el9_8.4 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:1.18.4-8.el9_2.3 < *unaffected
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions0:1.22.1-4.el9_4.3 < *unaffected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:1.22.12-5.el9_6.3 < *unaffected

Weaknesses

  • CWE-125: Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References