What is CVE-2021-47123?

CVE-2021-47123 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2024-03-15.

How severe is CVE-2021-47123?

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

Is CVE-2021-47123 known to be exploited?

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

Double Free in Linux

CVE-2021-47123

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix ltout double free on completion race Always remove linked timeout on io_link_timeout_fn() from the master request link list, otherwise we may get use-after…

Vulnerability class: Double Free

EPSS: 0.002 (12.3th 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 90cd7e424969d29aff653333b4dcb4e2e199d791, 5.11, 0
Linux Linux_kernel — versions 5.13

Weakness classification (CWE)

Public proof-of-concept exploits

NaInSec/CVE-LIST

References

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

Frequently asked questions

What is CVE-2021-47123?: CVE-2021-47123 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2024-03-15.
How severe is CVE-2021-47123?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-47123 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.