Vulnerability Description
A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1972621Issue TrackingPermissions RequiredThird Party Advisory
- https://ubuntu.com/security/CVE-2021-3428Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/03/17/1Mailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1972621Issue TrackingPermissions RequiredThird Party Advisory
- https://ubuntu.com/security/CVE-2021-3428Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/03/17/1Mailing ListThird Party Advisory
FAQ
What is CVE-2021-3428?
CVE-2021-3428 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an...
How severe is CVE-2021-3428?
CVE-2021-3428 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3428?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.