CVE-2021-47105

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47105
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47105.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47105
Downstream
Related
Published
2024-03-04T19:15:18Z
Modified
2025-08-09T19:01:26Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

ice: xsk: return xsk buffers back to pool when cleaning the ring

Currently we only NULL the xdp_buff pointer in the internal SW ring but we never give it back to the xsk buffer pool. This means that buffers can be leaked out of the buff pool and never be used again.

Add missing xskbufffree() call to the routine that is supposed to clean the entries that are left in the ring so that these buffers in the umem can be used by other sockets.

Also, only go through the space that is actually left to be cleaned instead of a whole ring.

References

Affected packages