CVE-2022-33740: High severity red hat fedora vulnerability
Last updated 11 April 2025
Other sources
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).
— Launchpad
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2022-33740?
CVE-2022-33740 has been assessed with a medium severity rating.
How do I fix CVE-2022-33740?
To fix CVE-2022-33740, update to the latest versions of affected Linux distributions or kernels as specified in the remediation details.
Which versions of software are affected by CVE-2022-33740?
CVE-2022-33740 affects several versions of the Linux kernel and certain Fedora and Debian releases.
What kind of data leak does CVE-2022-33740 involve?
CVE-2022-33740 involves a memory leak issue related to Linux Block and Network PV device frontends.
Is there a workaround for CVE-2022-33740?
No specific workaround for CVE-2022-33740 has been documented; the best option is to apply the necessary updates.