What is CVE-2023-33250?

CVE-2023-33250 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-33250 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-33250?

CVE-2023-33250 has a CVSS score of 4.4 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-33250?

No patch is currently available for CVE-2023-33250. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-33250 actively exploited?

CVE-2023-33250 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-33250

Medium

The Linux kernel 6.3 has a use-after-free in iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c.

Package Linux Kernel

Published 2023-05-21

Last modified 2025-03-18

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.4

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-33250 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-33250 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

SUSE
https://bugzilla.suse.com/show_bug.cgi?id=1211597
Groups
https://groups.google.com/g/syzkaller/c/G6P9yecsTZ8/m/iiqFVOM9BwAJ

Mailing List Third Party Advisory
Kernel.org
https://lore.kernel.org/linux-iommu/ZDabT%2FuRl%2FjxFhm0%40ip-172-31-85-199.ec2.internal/T/
Security
https://security.netapp.com/advisory/ntap-20230622-0006/

Third Party Advisory
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=804ca14d04df09bf7924bacc5ad22a4bed80c94f
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dbe245cdf5189e88d680379ed13901356628b650
Patch

Details

CVE ID CVE-2023-33250

Severity Medium

CVSS score 4.4 / 10

CVSS version 3.1

Published 2023-05-21

Modified 2025-03-18

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-33250?

CVE-2023-33250 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-33250 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-33250?

CVE-2023-33250 has a CVSS score of 4.4 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-33250?

No patch is currently available for CVE-2023-33250. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-33250 actively exploited?

No — CVE-2023-33250 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →