CVE-2023-53285
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-16

Last updated on: 2025-12-02

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ext4: add bounds checking in get_max_inline_xattr_value_size() Normally the extended attributes in the inode body would have been checked when the inode is first opened, but if someone is writing to the block device while the file system is mounted, it's possible for the inode table to get corrupted. Add bounds checking to avoid reading beyond the end of allocated memory if this happens.
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Meta Information
Published
2025-09-16
Last Modified
2025-12-02
Generated
2026-06-16
AI Q&A
2025-09-16
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53285
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 4.14.315 (exc)
linux linux_kernel From 4.15 (inc) to 4.19.283 (exc)
linux linux_kernel From 4.20 (inc) to 5.4.243 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.180 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.112 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.29 (exc)
linux linux_kernel From 6.2 (inc) to 6.2.16 (exc)
linux linux_kernel From 6.3 (inc) to 6.3.3 (exc)
linux linux_kernel 6.4
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CWE ID Description
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Executive Summary

This vulnerability in the Linux kernel involves the ext4 file system's handling of extended attributes. Specifically, the function get_max_inline_xattr_value_size() lacked proper bounds checking. Normally, extended attributes in the inode body are checked when the inode is first opened. However, if someone writes directly to the block device while the file system is mounted, it can corrupt the inode table. Without bounds checking, this could lead to reading beyond the allocated memory, potentially causing memory corruption or crashes. The fix adds bounds checking to prevent reading beyond the end of allocated memory in such cases.

Impact Analysis

This vulnerability can lead to memory corruption or crashes in the Linux kernel's ext4 file system if the inode table becomes corrupted due to concurrent writes to the block device while mounted. This could potentially be exploited to cause denial of service or other unintended behavior on affected systems.

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