CVE-2022-33742
High
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).
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linux Kernel
PublishedJul 5, 2022
First seenJul 5, 2022
How to fix
Update
- linux linux_kernel4.9.322, 4.14.287, 4.19.251, 5.4.204, 5.10.129, 5.15.53, 5.18.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.13 ≤ v < 4.9.322, 4.14 ≤ v < 4.14.287, 4.19 ≤ v < 4.19.251, 5.4 ≤ v < 5.4.204, 5.10 ≤ v < 5.10.129, 5.15 ≤ v < 5.15.53, 5.18 ≤ v < 5.18.10, 2.6.12, 5.19 | 4.9.322, 4.14.287, 4.19.251, 5.4.204, 5.10.129, 5.15.53, 5.18.10 |
| fedoraproject fedora | 35, 36 | — |
| debian debian_linux | 10.0, 11.0 | — |
| xen xen | No range specified | — |
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