CVE-2024-42104

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: nilfs2: add missing check for inode numbers on directory entries Syzbot reported that mounting and unmounting a specific pattern of corrupted nilfs2 filesystem images causes a use-after-free of metadata file inodes, which triggers a kernel bug in lru_add_fn(). As Jan Kara pointed out, this is because the link count of a metadata file gets corrupted to 0, and nilfs_evict_inode(), which is called from iput(), tries to delete that inode (ifile inode in this case). The inconsistency occurs because directories containing the ino...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < c33c2b0d92aa1c2262d999b2598ad6fbd53bd479, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 07c176e7acc5579c133bb923ab21316d192d0a95, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 2f2fa9cf7c3537958a82fbe8c8595a5eb0861ad7, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < b11e8fb93ea5eefb2e4e719497ea177a58ff6131, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 1b7d549ed2c1fa202c751b69423a0d3a6bd5a180, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 3ab40870edb883b9633dc5cd55f5a2a11afa618d, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 265fff1a01cdc083aeaf0d934c929db5cc64aebf, >= 2ba466d74ed74f073257f86e61519cb8f8f46184 < bb76c6c274683c8570ad788f79d4b875bde0e458, >= 2.6.30, < 4.19.318, >= 4.20 < 5.4.280, >= 5.5 < 5.10.222, >= 5.11 < 5.15.163, >= 5.16 < 6.1.98, >= 6.2 < 6.6.39, >= 6.7 < 6.9.9

Fixed versions

4.19.318, 5.4.280, 5.10.222, 5.15.163, 6.1.98, 6.6.39, 6.9.9

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416