What is CVE-2021-47111?

CVE-2021-47111 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2024-03-15.

How severe is CVE-2021-47111?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-47111 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux

CVE-2021-47111

In the Linux kernel, the following vulnerability has been resolved: xen-netback: take a reference to the RX task thread Do this in order to prevent the task from being freed if the thread returns (which can be triggered by the frontend)…

Vulnerability class: Use-After-Free

EPSS: 0.002 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 2ac061ce97f413bfbbdd768f7d2e0fda2e8170df, 5.5, 0
Linux Linux_kernel — versions 5.13

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

NaInSec/CVE-LIST

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2021-47111?: CVE-2021-47111 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2024-03-15.
How severe is CVE-2021-47111?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-47111 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.