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Debian: CVE-2022-33742: linux, xen -- security update

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Debian: CVE-2022-33742: linux, xen -- security update

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:P)
Published
07/05/2022
Created
10/03/2022
Added
10/03/2022
Modified
10/03/2022

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).

Solution(s)

  • debian-upgrade-linux
  • debian-upgrade-xen

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