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CVE-2021-47367

MEDIUM
Published 2024-05-21T15:03:33.861Z
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CVSS Score

V3.1
5.5
/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.100
Higher than 10.0% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7 fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7
Linux

Linux

Affected Versions:

5.13 0 5.14.9 5.15
linux

linux_kernel

Affected Versions:

5.13
linux

linux_kernel

Affected Versions:

fb32856b16ad
linux

linux_kernel

Affected Versions:

fb32856b16ad
linux

linux_kernel

Affected Versions:

0
linux

linux_kernel

Affected Versions:

5.15
linux

linux_kernel

Affected Versions:

5.14.9

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-6qx7-m4qh-j7cp

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47367
WEB https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a
WEB https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba

Advisory provided by GitHub Security Advisory Database. Published: May 21, 2024, Modified: July 3, 2024

References

https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba
https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a
Published: 2024-05-21T15:03:33.861Z
Last Modified: 2025-05-04T07:09:29.088Z
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