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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2021-47367
HistoryMay 21, 2024 - 3:15 p.m.

CVE-2021-47367

2024-05-2115:15:22
Debian Security Bug Tracker
security-tracker.debian.org
2
linux
kernel
vulnerability
virtio-net
fix
pages
leaking
building
skb
big mode

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.2%

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.

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.2%