CVE-2021-47003
dmaengine: idxd: Fix potential null dereference on pointer status
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: Fix potential null dereference on pointer status
There are calls to idxd_cmd_exec that pass a null status pointer however
a recent commit has added an assignment to *status that can end up
with a null pointer dereference. The function expects a null status
pointer sometimes as there is a later assignment to *status where
status is first null checked. Fix the issue by null checking status
before making the assignment.
Addresses-Coverity: ("Explicit null dereferenced")
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: dmaengine: idxd: corrige una posible desreferencia nula en el estado del puntero. Hay llamadas a idxd_cmd_exec que pasan un puntero de estado nulo, sin embargo, una confirmación reciente agregó una asignación a *status que puede terminar con una desreferencia de puntero nulo. La función espera un puntero de estado nulo a veces, ya que hay una asignación posterior a *status donde el estado se verifica por primera vez como nulo. Solucione el problema verificando el estado nulo antes de realizar la asignación. Direcciones-Cobertura: ("Nulo explícito desreferenciado")
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-27 CVE Reserved
- 2024-02-28 CVE Published
- 2024-02-29 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/40e3b5c128645d2ddad12310c7be98758cafb2b0 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/89e3becd8f821e507052e012d2559dcda59f538e | 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" | >= 5.10.17 < 5.10.38 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.17 < 5.10.38" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.11.22 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.11.22" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.12.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.12.5" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.13" | en |
Affected
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