This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-55995 →
UBUNTU-CVE-2026-55995
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS. This issue affects open-iscsi: from ? through 56718d4e...
Original description
The description as published by the source.
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS. This issue affects open-iscsi: from ? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:14.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
open-isns
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.97-2ubuntu0.1~esm1"}]}]
Ubuntu:20.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:20.04:LTS
open-isns
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.97-3ubuntu0.1~esm1"}]}]
Ubuntu:22.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
open-isns
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.101-0ubuntu2.1"}]}]
Ubuntu:24.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
open-isns
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.101-0.3ubuntu0.1"}]}]
Ubuntu:26.10
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
open-iscsi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
open-isns
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.101-2.1ubuntu0.1"}]}]
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org