What is CVE-2022-0617?

CVE-2022-0617 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-02-16.

How severe is CVE-2022-0617?

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

Is CVE-2022-0617 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-2022-0617

A flaw null pointer dereference in the Linux kernel UDF file system functionality was found in the way user triggers udf_file_write_iter function for the malicious UDF image. A local user could use this flaw to crash the system. Actual from Linux kernel 4.2-rc1 till 5.17-rc2.

Published 2022-02-16 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Linux Kernel — versions 4.2, 4.2.0, 5.17
Debian Linux — versions 9.0, 10.0, 11.0
Kernel — versions Linux kernel 5.17-rc2

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Exploit, Patch, Vendor Advisory)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
lore.kernel.org/lkml/20220114172329.ygzry5rlz64ua2nr@quack3.lan/T/
lists.debian.org/debian-lts-announce/2022/03/msg00011.html (mailing-list, Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/03/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
www.debian.org/security/2022/dsa-5095 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2022/dsa-5096 (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/04/13/2 (mailing-list, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0617?: CVE-2022-0617 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-02-16.
How severe is CVE-2022-0617?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-0617 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.