CVE-2022-33981: debian debian_linux Use After Free

Modified

AliasesUBUNTU-CVE-2022-33981DEBIAN-CVE-2022-33981

Published 18-06-2022Last modified 05-05-2025

Vulnerability summary

CVE-2022-33981 is a low (CVSS 3.3) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 46.1% of scored vulnerabilities. 1 public exploit is recorded.

Priority

Routine

Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

3.3/10

010

Low · v3.1 (CVE.org)

EPSS score

0.55%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits1reference

Timeline

18-06-2022
PublishedVulnerability first disclosed.
05-05-2025
Last modifiedVulnerability information updated.

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 metrics

6 scores · 4 sources · 3 versions

v4.07.1v3.13.3v2.02.1

EPSS trend

Probability

0.55%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.56% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found

referenceUnverified
Exploit Reference (seclists.org)
Maturity: unknown

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu79 products

linuxAll versions (No fix recorded) | < 4.15.0-191.202 | < 5.4.0-122.138 | < 5.15.0-41.44
linux-awsAll versions (No fix recorded) | < 4.15.0-1139.150 | < 5.4.0-1081.88 | < 5.15.0-1015.19
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1081.88~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2078.83 | All versions (No fix recorded) | < 5.4.0-1081.88+fips1
linux-aws-hwe< 4.15.0-1139.150~16.04.1
linux-azure< 4.15.0-1149.164~14.04.1 | < 4.15.0-1149.164~16.04.1 | All versions (No fix recorded) | < 5.4.0-1086.91 | < 5.15.0-1014.17
linux-azure-4.15< 4.15.0-1149.164
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1014.17~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1086.91~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fips< 4.15.0-2059.65 | All versions (No fix recorded) | < 5.4.0-1086.91+fips1
linux-bluefield< 5.4.0-1042.47
linux-dell300x< 4.15.0-1051.56
linux-fipsAll versions (No fix recorded) | < 4.15.0-1096.107 | < 5.4.0-1057.65
linux-gcp< 4.15.0-1134.150~16.04.2 | All versions (No fix recorded) | < 5.4.0-1084.92 | < 5.15.0-1013.18
linux-gcp-4.15< 4.15.0-1134.150
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1013.18~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1084.92~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2043.48 | All versions (No fix recorded) | < 5.4.0-1081.88+fips1
linux-gke< 5.4.0-1078.84 | < 5.15.0-1011.14
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.4< 5.4.0-1078.84~18.04.1
linux-gkeop< 5.4.0-1049.52 | < 5.15.0-1002.4
linux-gkeop-5.4< 5.4.0-1049.52~18.04.1
linux-hwe< 4.15.0-191.202~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-41.44~20.04.1
linux-hwe-5.4< 5.4.0-122.138~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1029.33 | < 5.15.0-1010.12
linux-ibm-5.4< 5.4.0-1029.33~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-intel-iotg< 5.15.0-1013.17
linux-intel-iotg-5.15< 5.15.0-1015.20~20.04.2
linux-iot< 5.4.0-1004.6
linux-kvmAll versions (No fix recorded) | < 4.15.0-1125.130 | < 5.4.0-1071.76 | < 5.15.0-1013.16
linux-lowlatency< 5.15.0-41.44
linux-lowlatency-hwe-5.15< 5.15.0-42.45~20.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14< 5.14.0-1042.47
linux-oem-5.17< 5.17.0-1011.12
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oracle< 4.15.0-1104.115~16.04.1 | < 4.15.0-1104.115 | < 5.4.0-1079.87 | < 5.15.0-1013.17
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1013.17~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1079.87~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1066.76 | < 5.15.0-1012.14
linux-raspi-5.4< 5.4.0-1066.76~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1117.125 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1016.16
linux-riscvAll versions (No fix recorded) | < 5.15.0-1015.17
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1135.145