EPSS
Percentile
5.1%
kernel is vulnerable to denial of service. The ext4 file system implementation contains an integer overflow in ext4_es_cache_extent() when lblk + len exceeds 2^32. An attacker is able to crash the kernel by mounting a malicious file system.
ext4_es_cache_extent()
bugzilla.redhat.com/show_bug.cgi?id=1972621
git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-3428
ubuntu.com/security/CVE-2021-3428
www.openwall.com/lists/oss-security/2021/03/17/1