What is CVE-2022-4127?

CVE-2022-4127 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-11-28.

How severe is CVE-2022-4127?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2022-4127 known to be exploited?

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

NULL pointer dereference in Linux Kernel

CVE-2022-4127

A NULL pointer dereference issue was discovered in the Linux kernel in io_files_update_with_index_alloc. A local user could use this flaw to potentially crash the system causing a denial of service.

EPSS: 0.002 (10.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux Linux_kernel — versions 5.19
N/a Linux Kernel (Io_uring) — versions Fixed in 5.19

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

anonymous-1113/CPE_

References

secalert@redhat.com (Patch, Vendor Advisory)
secalert@redhat.com (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-4127?: CVE-2022-4127 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-11-28.
How severe is CVE-2022-4127?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-4127 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.