CVE-2023-53391
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-12

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
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Meta Information
Published
2025-09-18
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53391
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 2.6.30 (inc) to 5.10.188 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.121 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.39 (exc)
linux linux_kernel From 6.2 (inc) to 6.4.4 (exc)
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Exploitability
CWE
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CWE ID Description
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Executive Summary

This vulnerability is a memory leak in the Linux kernel related to the ramfs-based tmpfs filesystem. Specifically, the ramfs-based tmpfs uses ramfs_init_fs_context() to allocate memory for fc->s_fs_info, but it did not properly free this memory because it did not use ramfs_kill_sb() in the kill_sb method. The fix involves using ramfs_kill_sb() to free the allocated memory and avoid the leak.

Impact Analysis

The vulnerability can lead to a memory leak in the Linux kernel when using ramfs-based tmpfs. Over time, this memory leak could cause increased memory usage, potentially degrading system performance or leading to resource exhaustion.

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