CVE-2026-88373
Publication date 24 September 2026
Last updated 9 October 2026
Ubuntu priority
Description
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libde265 | 26.04 LTS resolute |
Fixed 1.0.16-1ubuntu0.1~esm2
|
| 24.04 LTS noble |
Fixed 1.0.15-1ubuntu0.2
|
|
| 22.04 LTS jammy |
Fixed 1.0.8-1ubuntu0.3+esm3
|
|
| 20.04 LTS focal |
Fixed 1.0.4-1ubuntu0.4+esm3
|
|
| 18.04 LTS bionic |
Fixed 1.0.2-2ubuntu0.18.04.1~esm7
|
|
| 16.04 LTS xenial |
Fixed 1.0.2-2ubuntu0.16.04.1~esm7
|
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CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8909-1
- libde265 vulnerability
- 8 October 2026