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CVE-2021-33631Kernel crash in EXT4 filesystem
- 5.5MediumCVSS base score
- 0.37%Exploitation in 30 daysEPSS · top 68% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By openEuler
- 3 years later
· 3 years later
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| openEulerCNA (assigner) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.37% · top 68% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
References
References19
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030 (opens in a new tab)x_transferred
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031 (opens in a new tab)x_transferred
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1032 (opens in a new tab)x_transferred
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1033 (opens in a new tab)x_transferred
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1034 (opens in a new tab)x_transferred
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1035 (opens in a new tab)x_transferred
- https://gitee.com/src-openeuler/kernel/pulls/1389 (opens in a new tab)x_transferred
- https://gitee.com/src-openeuler/kernel/pulls/1396 (opens in a new tab)x_transferred
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c099c4fdc438014d5893629e70a8ba934433ee8 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/30/3 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/30/4 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/30/5 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/30/9 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/30/10 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/31/3 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/01/31/2 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/02/02/6 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/02/02/9 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/02/03/1 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-20308 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-33631)Record last updated .