CVE-2025-71230
Memory Leak in Linux Kernel HFS Filesystem Superblock Handling
Publication date: 2026-02-18
Last updated on: 2026-03-18
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.19 (inc) to 6.19.1 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.11 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's HFS filesystem implementation. When the HFS filesystem was converted to use a new mount API, a bug was introduced related to the allocation and cleanup of the sb->s_fs_info data structure. Specifically, if the function setup_bdev_super() fails after a new superblock is allocated by sget_fc(), but before hfs_fill_super() takes ownership of the filesystem-specific s_fs_info data, the s_fs_info data is leaked and not properly freed.
The issue was fixed by ensuring that sb->s_fs_info is always freed in the hfs_kill_super() function, preventing the memory leak.
What immediate steps should I take to mitigate this vulnerability?
I don't know
How can this vulnerability impact me? :
This vulnerability can lead to a memory leak in the Linux kernel when mounting HFS filesystems under certain failure conditions. Over time, repeated failures could cause increased memory usage, potentially leading to resource exhaustion or degraded system performance.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know