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Vulnerability record · CVE-2020-15436 · published 23 November 2020

CVE-2020-15436: Linux kernel use after free vulnerability

Linux · Linux Kernel

Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

6.7 CVSS 3.1 Medium EPSS 0.93% · top 41.0% CWE-416 · Use after free
6.7CVSS 3.1 base score, v2 7.2
0.93%EPSS exploitation probability, 30 days
NoNot in CISA KEV
19Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

19 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lkml.org/lkml/2020/6/7/379 ExploitPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/ Third Party Advisory
https://lkml.org/lkml/2020/6/7/379 ExploitPatchVendor Advisory
https://security.netapp.com/advisory/ntap-20201218-0002/ Third Party Advisory

Track CVE-2020-15436 inside VULONE

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-15436), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.