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QSN-8909-1: libde265 vulnerability
October 8, 2026
Summary
libde265 could be made to crash if it received specially crafted input.
Details
It was discovered that libde265 did not properly validate certain crafted H.265 bitstreams, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause libde265 to crash, resulting in a denial of service.
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.9.0.464 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.6.015 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.5.018 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.4.038 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.3.018 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.2.002 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.1.007 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
| 6.8.0.205 | Ubuntu 22.04 LTS | libde265-0 | Internally-facing | 1.0.8-1ubuntu0.3+esm1 | 1.0.8-1ubuntu0.3+esm3 | Fix pending |
Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.
CVEs
References
https://ubuntu.com/security/notices/USN-8909-1
https://nvd.nist.gov/vuln/detail/CVE-2026-88373
Update
Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:
| Platform | Package | Version |
|---|---|---|
| bionic | libde265 | 1.0.2-2ubuntu0.18.04.1~esm7 |
| Ubuntu 20.04 LTS | libde265 | 1.0.4-1ubuntu0.4+esm3 |
| Ubuntu 22.04 LTS | libde265 | 1.0.8-1ubuntu0.3+esm3 |
| Ubuntu 24.04 LTS | libde265 | 1.0.15-1ubuntu0.2 |
| resolute | libde265 | 1.0.16-1ubuntu0.1~esm2 |
| xenial | libde265 | 1.0.2-2ubuntu0.16.04.1~esm7 |