CVE-2021-33909
7.8
HIGH
CVSS 3.1
EPSS 9.8%
Description
fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
How to fix CVE-2021-33909
To remediate CVE-2021-33909, upgrade the affected package to a fixed version below.
- Debian/linux—upgrade to 5.10.46-2 or later
Is CVE-2021-33909 being exploited?
Moderate — EPSS is 9.8%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 5.10.46-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |