CVE-2026-1940

Summary

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References

• https://access.redhat.com/security/cve/CVE-2026-1940
• https://bugzilla.redhat.com/show_bug.cgi?id=2436932
• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854
• https://gstreamer.freedesktop.org/security/sa-2026-0001.html
• https://security-tracker.debian.org/tracker/CVE-2026-1940

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