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.
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Score 6.7 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 6.7; sources differ by 0.0.
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.
November 23, 2020
November 21, 2024
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-oem-20.04 (5.6.0.1048.44) @ focal | 2026-05-23 | ubuntu |
| redhat | kernel-0:3.10.0-1062.51.1.el7 | 2021-06-22 | redhat |
| redhat | kernel-0:3.10.0-957.72.1.el7 | 2021-04-27 | redhat |
| redhat | kernel-rt-0:3.10.0-1160.15.2.rt56.1152.el7 | 2021-02-02 | redhat |
| redhat | kernel-0:3.10.0-1160.15.2.el7 | 2021-02-02 | redhat |
| redhat | kernel-alt-0:4.14.0-115.35.1.el7a | 2021-02-02 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
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.
RHSA-2021:0336 — Moderate
RHSA-2021:0338 — Moderate
RHSA-2021:0354 — Moderate
RHSA-2021:1376 — Moderate
RHSA-2021:2523 — Moderate
Linux kernel (OEM) vulnerabilities
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msrc · redhat
CWE-416