Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e50e5129f384ae282adebfb561189cdb19b81cee before 0752e7fb549d90c33b4d4186f11cfd25a556d1dd; affected e50e5129f384ae282adebfb561189cdb19b81cee before 737fb7853acd5bc8984f6f42e4bfba3334be8ae1; affected e50e5129f384ae282adebfb561189cdb19b81cee before 111103907234bffd0a34fba070ad9367de058752; affected e50e5129f384ae282adebfb561189cdb19b81cee before 0a46ef234756dca04623b7591e8ebb3440622f0b |
| Linux / Linux | affected 4.13; unaffected 0 before 4.13; unaffected 6.1.107 through 6.1.*; unaffected 6.6.47 through 6.6.*; unaffected 6.9.7 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0752e7fb549d90c33b4d4186f11cfd25a556d1dd
- https://git.kernel.org/stable/c/737fb7853acd5bc8984f6f42e4bfba3334be8ae1
- https://git.kernel.org/stable/c/111103907234bffd0a34fba070ad9367de058752
- https://git.kernel.org/stable/c/0a46ef234756dca04623b7591e8ebb3440622f0b
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.