CVE-2021-47367

virtio-net: fix pages leaking when building skb in big mode

Medium · published May 21, 2024

CVSS v3.1
5.5
EPSS
0%
Percentile
12.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00227 · 12.7th percentile
Published
2024-05-21T15:03Z
EPSS history
Timeline
  • 21 MAY 15:03Z
    virtio-net: fix pages leaking when building skb in big mode
    cvelistv5