CVE-2024-40972 (GCVE-0-2024-40972)
Vulnerability from cvelistv5
Published
2024-07-12 12:32
Modified
2026-01-05 10:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: do not create EA inode under buffer lock ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.
References
Impacted products
Vendor Product Version
Linux Linux Version: e50e5129f384ae282adebfb561189cdb19b81cee
Version: e50e5129f384ae282adebfb561189cdb19b81cee
Version: e50e5129f384ae282adebfb561189cdb19b81cee
Version: e50e5129f384ae282adebfb561189cdb19b81cee
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