CVE-2021-4148
Last modified
CVE-2021-4148 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
Description
A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.14.16 |
| Fedoraproject | Fedora | 35 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2026487Issue Tracking, Third Party Advisory
- https://lkml.org/lkml/2021/9/12/323Exploit, Mailing List, Patch, Third Party Advisory
- https://lkml.org/lkml/2021/9/17/1037Exploit, Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2026487Issue Tracking, Third Party Advisory
- https://lkml.org/lkml/2021/9/12/323Exploit, Mailing List, Patch, Third Party Advisory
- https://lkml.org/lkml/2021/9/17/1037Exploit, Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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