CVE-2026-46046
ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()
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().
INFO
Published Date :
May 27, 2026, 2:17 p.m.
Last Modified :
June 1, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the patched version.
- Verify the patch is applied successfully.
- Restart the system to apply changes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-46046.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46046 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-46046
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-46046 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46046 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 01, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29 Added Reference https://git.kernel.org/stable/c/b706d00206a9e82362a9633efbd8b5775650169b Added Reference https://git.kernel.org/stable/c/dd98a5603a212ea9c96c6982ccdbcc748fdb9a56 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920 Added Reference https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8 Added Reference https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf Added Reference https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f Added Reference https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298