CVE-2022-33744
Ubuntu Security Notice USN-5684-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.
Los invitados Arm pueden causar DoS Dom0 por medio de dispositivos PV Al mapear páginas de invitados en Arm, dom0 está utilizando un rbtree para llevar a cabo un seguimiento de las asignaciones externas. La actualización de ese rbtree no siempre es realizado completamente con el bloqueo relacionado, resultando en una pequeña ventana de carrera, que invitados no privilegiados pueden usar por medio de dispositivos PV para causar inconsistencias en el rbtree. Estas incoherencias pueden dar lugar a la denegación de servicio (DoS) de dom0, por ejemplo, provocando bloqueos o imposibilidad de llevar a cabo más asignaciones de las páginas de memoria de otros invitados
It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Selim Enes Karaduman discovered that a race condition existed in the General notification queue implementation of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2022-06-15 CVE Reserved
- 2022-07-05 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
URL | Tag | Source |
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https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html | Mailing List |
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URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
http://www.openwall.com/lists/oss-security/2022/07/05/4 | 2022-10-29 | |
http://xenbits.xen.org/xsa/advisory-406.html | 2022-10-29 |
URL | Date | SRC |
---|---|---|
https://www.debian.org/security/2022/dsa-5191 | 2022-10-29 | |
https://xenbits.xenproject.org/xsa/advisory-406.txt | 2022-10-29 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.13 <= 5.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.13 <= 5.18" | - |
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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