USN-8573-1: libde265 vulnerabilities

It was discovered that libde265 did not properly manage memory under
certain circumstances. An attacker could possibly use this issue to
cause libde265 to crash, resulting in a denial of service. This issue
only affected Ubuntu 22.04 LTS. (CVE-2023-51792)

It was discovered that libde265 did not properly handle certain
malformed media files, leading to a heap buffer overflow. An attacker
could possibly use this issue to cause libde265 to crash, resulting in
a denial of service. (CVE-2024-38949, CVE-2024-38950)

It was discovered that libde265 did not properly handle certain
malformed input, leading to a segmentation fault. An attacker could
possibly use this issue to cause libde265 to crash, resulting in a
denial of service. (CVE-2025-61147)

It was discovered that libde265 did not properly handle a malformed
H.265 PPS NAL unit, leading to a segmentation fault. An attacker could
possibly use this issue to cause libde265 to crash, resulting in a
denial of service. (CVE-2026-33164)

It was discovered that libde265 did not properly handle certain
crafted HEVC bitstreams, leading to an out-of-bounds write. An attacker
could possibly use this issue to cause libde265 to crash, resulting in
a denial of service. (CVE-2026-33165)

Valentin Mercier discovered that libde265 did not properly validate
tile geometry when handling crafted media files, leading to an
out-of-bounds read. An attacker could possibly use this issue to cause
libde265 to crash, resulting in a denial of service, or to obtain
sensitive information. (CVE-2026-45382)

It was discovered that libde265 did not properly validate certain
values when decoding crafted media files, leading to an out-of-bounds
read. An attacker could possibly use this issue to cause libde265 to
crash, resulting in a denial of service, or to obtain sensitive
information. (CVE-2026-45383)

Ying Dong discovered that libde265 did not properly validate reference
picture set entries when handling a crafted H.265 bitstream, leading to
an out-of-bounds write. An attacker could possibly use this issue to
cause libde265 to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2026-49295)

Ying Dong discovered that libde265 did not properly manage memory when
handling a crafted sequence of H.265 NAL units, leading to excessive
memory consumption. An attacker could possibly use this issue to cause
libde265 to use excessive resources, leading to a denial of service.
(CVE-2026-49337)

Ying Dong discovered that libde265 did not properly handle certain
crafted H.265 bitstreams with large dimensions, leading to a heap
buffer overflow. An attacker could possibly use this issue to cause
libde265 to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2026-49346)

It was discovered that libde265 did not properly handle certain crafted
HEVC bitstreams with large dimensions, leading to an out-of-bounds
read and write. An attacker could possibly use this issue to cause
libde265 to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2026-54240)

It was discovered that libde265 did not properly handle certain crafted
HEVC bitstreams with large dimensions, leading to a heap buffer
overflow. An attacker could possibly use this issue to cause libde265
to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2026-54241)