This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-88373 →
UBUNTU-CVE-2026-88373
libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length...
Original description
The description as published by the source.
libde265 commit 4d45a6b contains a NULL pointer dereference vulnerability in the NAL parsing path. When de265_push_NAL() is called with a zero-length NAL unit, the resulting NAL_unit may retain a NULL backing buffer, which is subsequently passed as the destination argument to memcpy() in NAL_unit::set_data(). Although the copy length is zero, this violates the nonnull requirement of memcpy() and results in undefined behavior, causing process termination in UBSan-instrumented builds and denial of service.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:Pro:16.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.16.04.1~esm7"}]}]
Ubuntu:Pro:18.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-2ubuntu0.18.04.1~esm7"}]}]
Ubuntu:Pro:20.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.4-1ubuntu0.4+esm3"}]}]
Ubuntu:Pro:22.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-1ubuntu0.3+esm3"}]}]
Ubuntu:24.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.15-1ubuntu0.2"}]}]
Ubuntu:Pro:26.04:LTS
libde265
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.16-1ubuntu0.1~esm2"}]}]
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org