CVE-2021-33631: Kernel crash in EXT4 filesystem

Modified

AliasesUBUNTU-CVE-2021-33631DEBIAN-CVE-2021-33631

Published 18-01-2024Last modified 13-02-2025

Vulnerability summary

CVE-2021-33631 is a high (CVSS 7.8) Integer Overflow or Wraparound vulnerability in openatom openeuler. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 31.1% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v3.1 (NVD)

EPSS score

0.37%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

18-01-2024
PublishedVulnerability first disclosed.
13-02-2025
Last modifiedVulnerability information updated.

Description

Integer Overflow or Wraparound vulnerability in openEuler kernel on Linux (filesystem modules) allows Forced Integer Overflow.This issue affects openEuler kernel: from 4.19.90 before 4.19.90-2401.3, from 5.10.0-60.18.0 before 5.10.0-183.0.0.

CVSS metrics

4 scores · 4 sources · 1 version

v3.17.8

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.37% 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

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected systems

Version check

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

Ubuntu103 products

linuxAll versions (No fix recorded) | < 4.4.0-256.290 | < 4.15.0-226.238 | < 5.4.0-156.173 | < 5.15.0-69.76
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 4.4.0-1133.139 | < 4.4.0-1171.186 | < 4.15.0-1169.182 | < 5.4.0-1107.115 | < 5.15.0-1033.37
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-5.15< 5.15.0-1033.37~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1107.115~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-fips< 4.15.0-2108.114 | All versions (No fix recorded) | < 5.4.0-1107.115+fips1
linux-aws-hwe< 4.15.0-1169.182~16.04.1
linux-azure< 4.15.0-1178.193~14.04.1 | < 4.15.0-1178.193~16.04.1 | All versions (No fix recorded) | < 5.4.0-1114.120 | < 5.15.0-1035.42
linux-azure-4.15< 4.15.0-1178.193
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1035.42~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1113.119~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1035.42.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fips< 4.15.0-2087.93 | All versions (No fix recorded) | < 5.4.0-1113.119+fips1
linux-bluefield< 5.4.0-1068.74 | < 5.15.0-1015.17
linux-fips< 4.4.0-1102.109 | All versions (No fix recorded) | < 4.15.0-1124.135 | < 5.4.0-1082.91
linux-gcp< 4.15.0-1163.180~16.04.1 | All versions (No fix recorded) | < 5.4.0-1110.119 | < 5.15.0-1031.38
linux-gcp-4.15< 4.15.0-1163.180
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1031.38~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1110.119~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2071.76 | All versions (No fix recorded) | < 5.4.0-1110.119+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1030.35
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1074.78 | < 5.15.0-1017.22
linux-gkeop-5.15< 5.15.0-1017.22~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-226.238~16.04.1 | 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< 5.15.0-69.76~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4< 5.4.0-156.173~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1054.59 | < 5.15.0-1027.30
linux-ibm-5.4< 5.4.0-1054.59~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1023.28
linux-intel-iotg< 5.15.0-1027.32
linux-intel-iotg-5.15< 5.15.0-1027.32~20.04.1
linux-iot< 5.4.0-1019.20
linux-kvm< 4.4.0-1134.144 | < 4.15.0-1153.158 | < 5.4.0-1096.102 | < 5.15.0-1030.35
linux-lowlatency< 5.15.0-69.76
linux-lowlatency-hwe-5.15< 5.15.0-69.76~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lts-xenial< 4.4.0-256.290~14.04.1
linux-nvidia< 5.15.0-1023.23
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oracle< 4.15.0-1132.143~16.04.1 | < 4.15.0-1132.143 | < 5.4.0-1106.115 | < 5.15.0-1032.38
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< 5.15.0-1032.38~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1106.115~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1091.102 | < 5.15.0-1026.28
linux-raspi-5.4< 5.4.0-1091.102~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1034.37
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1030.34~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1027.31

Show all 103

Debian1 product

linux< 6.1.4-1

Openatom1 product

openeuler≥ 4.19.90, < 4.19.90-2401.3 | ≥ 5.10.0-60.18.0, < 5.10.0-183.0.0

Openeuler1 product

kernel≥ 4.19.90, < 4.19.90-2401.3 | ≥ 5.10.0-60.18.0, < 5.10.0-183.0.0

4 vendors · 106 products

References

27 links

www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030Vendor Advisory
www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031Vendor Advisory
www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1032Vendor Advisory
www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1033Vendor Advisory
www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1034Vendor Advisory
www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1035Vendor Advisory
gitee.com/src-openeuler/kernel/pulls/1389Release Notes
gitee.com/src-openeuler/kernel/pulls/1396Release Notes
git.kernel.org/pub/…Patch
www.openwall.com/lists/oss-security/2024/01/30/3

Show all 27 references