CVE-2022-33740
Severity Score
7.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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).
Unas fuga de datos de frontends de disco/NIC de Linux Este registro de información de CNA se relaciona con múltiples CVE; el texto explica qué aspectos/vulnerabilidades corresponden a qué CVE.] Las interfaces de dispositivos Linux Block y Network PV no ponen a cero las regiones de memoria antes de compartirlas con el backend (CVE-2022-26365, CVE-2022-33740). Además, la granularidad de la tabla de concesión no permite compartir menos de una página de 4K, lo que hace que los datos no relacionados que residen en la misma página de 4K que los datos compartidos con un backend sean accesibles por dicho backend (CVE-2022-33741, CVE-2022- 33742)
*Credits:
The issue related to not zeroing memory areas used for shared communications was discovered by Roger Pau Monné of Citrix. The issue related to leaking contiguous data in granted pages was disclosed publicly.
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-06-15 CVE Reserved
- 2022-07-05 CVE Published
- 2024-01-26 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2022/07/05/6 | 2023-11-07 | |
| http://xenbits.xen.org/xsa/advisory-403.html | 2023-11-07 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 36 Search vendor "Fedoraproject" for product "Fedora" and version "36" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.13 < 4.9.322 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.13 < 4.9.322" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.14 < 4.14.287 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 4.14.287" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 4.19.251 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 4.19.251" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.4 < 5.4.204 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.4 < 5.4.204" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.10.129 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.10.129" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15 < 5.15.53 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.53" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.18 < 5.18.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.18 < 5.18.10" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.12 Search vendor "Linux" for product "Linux Kernel" and version "2.6.12" | rc2 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.12 Search vendor "Linux" for product "Linux Kernel" and version "2.6.12" | rc3 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.12 Search vendor "Linux" for product "Linux Kernel" and version "2.6.12" | rc4 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.12 Search vendor "Linux" for product "Linux Kernel" and version "2.6.12" | rc5 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 2.6.12 Search vendor "Linux" for product "Linux Kernel" and version "2.6.12" | rc6 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.19 Search vendor "Linux" for product "Linux Kernel" and version "5.19" | rc1 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.19 Search vendor "Linux" for product "Linux Kernel" and version "5.19" | rc2 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.19 Search vendor "Linux" for product "Linux Kernel" and version "5.19" | rc3 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.19 Search vendor "Linux" for product "Linux Kernel" and version "5.19" | rc4 |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.19 Search vendor "Linux" for product "Linux Kernel" and version "5.19" | rc5 |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | - | - |
Affected
| ||||||