Vulnerability in Linux Kernel
CVE-2021-4148
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: 0.003 (23.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux Linux_kernel
- Fedoraproject Fedora — versions 35
- N/a Kernel — versions kernel 5.14.16
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Exploit, Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Exploit, Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-4148?
- CVE-2021-4148 is a medium-severity vulnerability in Linux Kernel, classified under Improper Validation of Integrity Check Value. CVSS score: 5.5/10. Published 2022-03-23.
- How severe is CVE-2021-4148?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-4148 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.