What is CVE-2020-27835?

CVE-2020-27835 is a medium-severity vulnerability in Linux Infiniband Hfi1 Driver, classified under Use After Free. CVSS score: 4.4/10. Published 2021-01-07.

How severe is CVE-2020-27835?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Is CVE-2020-27835 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 Infiniband Hfi1 Driver

CVE-2020-27835

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.

Vulnerability class: Use-After-Free

EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux Infiniband_hfi1_driver — versions 5.10
N/a Kernel — versions kernel versions prior to 5.10-rc6

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2020-27835?: CVE-2020-27835 is a medium-severity vulnerability in Linux Infiniband Hfi1 Driver, classified under Use After Free. CVSS score: 4.4/10. Published 2021-01-07.
How severe is CVE-2020-27835?: Medium severity. CVSS v3 base score is 4.4 out of 10.
Is CVE-2020-27835 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.