CVE-2021-47367
virtio-net: fix pages leaking when building skb in big mode
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
virtio-net: fix pages leaking when building skb in big mode
We try to use build_skb() if we had sufficient tailroom. But we forget
to release the unused pages chained via private in big mode which will
leak pages. Fixing this by release the pages after building the skb in
big mode.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: virtio-net: corrige páginas con fugas al compilar skb en modo grande. Intentamos usar build_skb() si tuviéramos suficiente espacio de adaptación. Pero nos olvidamos de liberar las páginas no utilizadas encadenadas vía privada en modo grande, lo que filtrará páginas. Para solucionar este problema, libere las páginas después de compilar el skb en modo grande.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-21 CVE Reserved
- 2024-05-21 CVE Published
- 2024-05-22 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba | 2021-09-30 | |
| https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a | 2021-09-19 |
| URL | Date | SRC |
|---|
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" | >= 5.13 < 5.14.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.14.9" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 5.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.15" | en |
Affected
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