CVE-2026-46046
Published May 27, 2026
Modified May 27, 2026
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().
References
Other References
https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920
https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8
https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf
https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f
https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298
Frequently Asked Questions
What is CVE-2026-46046? +
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().
How do I check if I'm vulnerable to CVE-2026-46046? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.