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).
References (7)
Core 7
Core References
Vendor Advisory x_refsource_misc
https://xenbits.xenproject.org/xsa/advisory-403.txt
Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-403.html
Mailing List, Patch, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2022/07/05/6
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2022/dsa-5191
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
Scores
CVSS v3
7.1
EPSS
0.0004
EPSS Percentile
13.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Details
CWE
CWE-200
Status
published
Products (8)
debian/debian_linux
10.0
debian/debian_linux
11.0
fedoraproject/fedora
35
fedoraproject/fedora
36
linux/linux_kernel
2.6.12 rc2 (5 CPE variants)
linux/linux_kernel
5.19 rc1 (5 CPE variants)
linux/linux_kernel
2.6.13 - 4.9.322
xen/xen
Published
Jul 05, 2022
Tracked Since
Feb 18, 2026