CVE-2026-49295: libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write…

PriorityP335high7.1CVSS 3.1

AVNACLPRNUIRSUCNILAH

EPSS

0.23%

13.5th percentile

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
struktur	libde265	< 1.0.20	1.0.20
strukturag	libde265	< 1.0.20	1.0.20

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