CVE-2021-22555
Linux Kernel Heap Out-of-Bounds Write Vulnerability
7.8
HIGH
CVSS 3.1
⚠ KEVEPSS 85.2%
Description
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space
How to fix CVE-2021-22555
To remediate CVE-2021-22555, upgrade the affected package to a fixed version below.
- —upgrade to 5.10.38-1 or later
Is CVE-2021-22555 being exploited?
Yes — CVE-2021-22555 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (1)
- from 0, < 5.10.38-1
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 |