CVE-2024-50096
nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error
The `nouveau_dmem_copy_one` function ensures that the copy push command is
sent to the device firmware but does not track whether it was executed
successfully.
In the case of a copy error (e.g., firmware or hardware failure), the
copy push command will be sent via the firmware channel, and
`nouveau_dmem_copy_one` will likely report success, leading to the
`migrate_to_ram` function returning a dirty HIGH_USER page to the user.
This can result in a security vulnerability, as a HIGH_USER page that may
contain sensitive or corrupted data could be returned to the user.
To prevent this vulnerability, we allocate a zero page. Thus, in case of
an error, a non-dirty (zero) page will be returned to the user.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nouveau/dmem: Se corrige la vulnerabilidad en migrants_to_ram tras un error de copia. La función `nouveau_dmem_copy_one` garantiza que el comando de copia push se envíe al firmware del dispositivo, pero no rastrea si se ejecutó correctamente. En el caso de un error de copia (por ejemplo, fallo del firmware o hardware), el comando de copia push se enviará a través del canal de firmware y `nouveau_dmem_copy_one` probablemente informará el éxito, lo que llevará a la función `migrate_to_ram` a devolver una página HIGH_USER sucia al usuario. Esto puede resultar en una vulnerabilidad de seguridad, ya que una página HIGH_USER que puede contener datos confidenciales o dañados podría devolverse al usuario. Para evitar esta vulnerabilidad, asignamos una página cero. Por lo tanto, en caso de un error, se devolverá al usuario una página no sucia (cero).
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-05 CVE Published
- 2024-11-05 CVE Updated
- 2024-11-06 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/5be73b690875f7eb2d2defb54ccd7f2f12074984 | Vuln. Introduced |
| URL | Date | SRC |
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| 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" | >= 5.1 < 5.10.227 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 5.10.227" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 5.15.168 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 5.15.168" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 6.1.113 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 6.1.113" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 6.6.57 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 6.6.57" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 6.11.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 6.11.4" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.1 < 6.12-rc3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 6.12-rc3" | en |
Affected
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