このページは Ubuntu 向けの修正状況です。脆弱性そのものの説明は CVE 本体のページにあります。
CVE-2026-12478 の詳細 →
UBUNTU-CVE-2026-12478
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-c...
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
出典: OSV.dev (Open Source Vulnerabilities) OSV
影響パッケージ
Ubuntu:Pro:22.04:LTS
libsoup3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
libsoup3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.10
libsoup3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
libsoup3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
参照URL
- report ubuntu.com
- report cve.org
- report access.redhat.com
- report access.redhat.com
- report bugzilla.redhat.com
- report gitlab.gnome.org