CVE-2020-27835

4.4 mediumEPSS 0.3%

Medium (4.4) in linux infiniband hfi1 driver. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.4 medium

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
CWE: CWE-416
Published: 2021-01-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

linux:infiniband_hfi1_driver

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901709
https://bugzilla.redhat.com/show_bug.cgi?id=1901709

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