CVE-2021-46953
ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
When failing the driver probe because of invalid firmware properties,
the GTDT driver unmaps the interrupt that it mapped earlier.
However, it never checks whether the mapping of the interrupt actially
succeeded. Even more, should the firmware report an illegal interrupt
number that overlaps with the GIC SGI range, this can result in an
IPI being unmapped, and subsequent fireworks (as reported by Dann
Frazier).
Rework the driver to have a slightly saner behaviour and actually
check whether the interrupt has been mapped before unmapping things.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ACPI: GTDT: no corrompe las asignaciones de interrupciones en caso de falla de la sonda de vigilancia. Cuando falla la sonda del controlador debido a propiedades de firmware no válidas, el controlador GTDT desasigna la interrupción que asignó anteriormente. Sin embargo, nunca comprueba si el mapeo de la interrupción realmente tuvo éxito. Aún más, si el firmware informa un número de interrupción ilegal que se superpone con el rango GIC SGI, esto puede resultar en que un IPI no se asigne y en posteriores fuegos artificiales (según lo informado por Dann Frazier). Vuelva a trabajar el controlador para que tenga un comportamiento un poco más sensato y verifique si la interrupción se ha asignado antes de desasignar las cosas.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-25 CVE Reserved
- 2024-02-27 CVE Published
- 2024-04-21 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/ca9ae5ec4ef0ed13833b03297ab319676965492c | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 4.14.233 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.14.233" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 4.19.191 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.19.191" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 5.4.118 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.4.118" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 5.10.36 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.10.36" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 5.11.20 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.11.20" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 5.12.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.12.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.13" | en |
Affected
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