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Vulnerability record · CVE-2022-33981 · published 18 June 2022

CVE-2022-33981: Linux kernel use after free vulnerability

Linux · Linux Kernel

drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.

3.3 CVSS 3.1 Low EPSS 0.56% · top 55.9% CWE-416 · Use after free
3.3CVSS 3.1 base score, v2 2.1
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.6 Release NotesVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/225362 Third Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/233087ca063686964a53c829d547c7571e3f67bf PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing ListThird Party Advisory
https://seclists.org/oss-sec/2022/q2/66 ExploitMailing ListPatchThird Party Advisory
https://www.debian.org/security/2022/dsa-5173 Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.6 Release NotesVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/225362 Third Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/233087ca063686964a53c829d547c7571e3f67bf PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing ListThird Party Advisory
https://seclists.org/oss-sec/2022/q2/66 ExploitMailing ListPatchThird Party Advisory
https://www.debian.org/security/2022/dsa-5173 Third Party Advisory

Track CVE-2022-33981 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2022-33981), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.