Buffer overflow in Linux
CVE-2021-47367
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (13.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Linux — versions fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7, 5.13, 0
- Linux Linux_kernel — versions 5.15
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-47367?
- CVE-2021-47367 is a medium-severity vulnerability in Linux, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2024-05-21.
- How severe is CVE-2021-47367?
- Medium severity. CVSS v3 base score is 5.5 out of 10.