What is CVE-2023-1249?

CVE-2023-1249 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 5.5/10. Published 2023-03-23.

How severe is CVE-2023-1249?

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

Is CVE-2023-1249 known to be exploited?

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

Use After Free in Linux Kernel

CVE-2023-1249

A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.

Vulnerability class: Use-After-Free

EPSS: 0.003 (25.3th 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
N/a Kernel — versions Linux kernel 5.18-rc1

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-1249?: CVE-2023-1249 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 5.5/10. Published 2023-03-23.
How severe is CVE-2023-1249?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2023-1249 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.