Fiche vulnérabilité
CVE-2022-33741 : faille élevée Linux Linux (CVSS 7.1)
Description
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
En bref
- Sévérité
- Élevée (CVSS 7.1)
- Vecteur CVSS
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 5 juil. 2022
- Dernière mise à jour
- 3 août 2024
Produits concernés
- Linux Linux
- Xen xen
Références
- Fiche CVE-2022-33741 sur le NVD (NIST)
- xenbits.xenproject.org/xsa/advisory-403.txt
- xenbits.xen.org/xsa/advisory-403.html
- openwall.com/lists/oss-security/2022/07/05/6
- lists.fedoraproject.org/archives/list/package…
- lists.fedoraproject.org/archives/list/package…
- debian.org/security/2022/dsa-5191
- lists.debian.org/debian-lts-announce/2022/10/msg00000.html