VulnerabilityModified
CVE-2021-3428
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.
MEDIUM 5.5EPSS 0.30%
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1972621Issue Tracking, Permissions Required, Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3428Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/03/17/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1972621Issue Tracking, Permissions Required, Third Party Advisory
- https://ubuntu.com/security/CVE-2021-3428Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/03/17/1Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.