🛡️ CVE-2022-26365 — debian-linux

🟠 CVSS 7.1 — High ✅ No Known Exploit CWE-401 NVD
7.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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).

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Weakness class

CVE-2022-26365 is classified as CWE-401: Memory Leak. Allocated memory is never released, so long-running or repeated operations gradually exhaust it.

Affected software

CVE-2022-26365 is recorded against 4 packages.

  • debian-linux
  • fedora
  • linux-kernel
  • xen

Timeline and source

Published on 5 July 2022 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

www.openwall.com
xenbits.xen.org
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
www.debian.org
xenbits.xenproject.org
www.openwall.com
xenbits.xen.org
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
www.debian.org
xenbits.xenproject.org

CVE-2022-26365 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 7.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE CWE-401
Public Exploit ✅ No
Source NVD
Published 2022-07-05
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
debian-linux
fedora
linux-kernel
xen

References

Mailing List, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/07/05/6
Mailing List, Patch, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/07/05/6

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