CVE-2026-46046
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BaseFortify

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduced a refcount leak in when block_csum is false. ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to get iloc.bh, but never releases it with brelse().
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Meta Information
Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-05-27
AI Q&A
2026-05-27
EPSS Evaluated
N/A
NVD
CVE-2026-46046
EUVD
EUVD-2026-32428
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a flaw in the Linux kernel's ext4 filesystem code. Specifically, a function called ext4_xattr_inode_dec_ref_all() fails to release a resource properly because it does not call brelse() to release a buffer head (iloc.bh) obtained from ext4_get_inode_loc(). This leads to a reference count leak when the block_csum feature is disabled.


How can this vulnerability impact me? :

The vulnerability causes a reference count leak in the ext4 filesystem code, which can lead to resource exhaustion over time. This may degrade system performance or stability, potentially causing crashes or other unexpected behavior due to unreleased resources accumulating.


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