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Status published
Medium
CVE-2021-47116
ext4: fix memory leak in ext4_mb_init_backend on error path.
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4_mb_init_backend on error path. Fix a memory leak discovered by syzbot when a file system is corrupted with an illegally large s_log_groups_per_flex.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Linux
View all reports →Affected Software
Linux
Vulnerable Versions:
df61d3cff422433527d3bc388f69484f0781d226, f91436d55a279f045987e8b8c1385585dca54be9, 9e7af67e9521fb5cbb5b01aca22921c313c2e48e, 5.10.27, 5.11.11, 5.12, 0, 5.10.43, 5.12.10, 5.13
Timeline
Official Publish:
March 15th, 2024
Last Modified:
May 23rd, 2026
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.