cbcvebase.
CVE-2024-42104
published 2024-07-30

CVE-2024-42104: In the Linux kernel, the following vulnerability has been resolved: nilfs2: add missing check for inode numbers on directory entries Syzbot reported that…

PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.26%
17.5th percentile
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 inode numbers of these metadata files that should not be visible in the namespace are read without checking. Fix this issue by treating the inode numbers of these internal files as errors in the sanity check helper when reading directory folios/pages. Also thanks to Hillf Danton and Matthew Wilcox for their initial mm-layer analysis.

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
debianlinux-6.1< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
linuxlinux
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < c33c2b0d92aa1c2262d999b2598ad6fbd53bd479c33c2b0d92aa1c2262d999b2598ad6fbd53bd479
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 07c176e7acc5579c133bb923ab21316d192d0a9507c176e7acc5579c133bb923ab21316d192d0a95
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 2f2fa9cf7c3537958a82fbe8c8595a5eb0861ad72f2fa9cf7c3537958a82fbe8c8595a5eb0861ad7
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < b11e8fb93ea5eefb2e4e719497ea177a58ff6131b11e8fb93ea5eefb2e4e719497ea177a58ff6131
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 1b7d549ed2c1fa202c751b69423a0d3a6bd5a1801b7d549ed2c1fa202c751b69423a0d3a6bd5a180
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 3ab40870edb883b9633dc5cd55f5a2a11afa618d3ab40870edb883b9633dc5cd55f5a2a11afa618d
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 265fff1a01cdc083aeaf0d934c929db5cc64aebf265fff1a01cdc083aeaf0d934c929db5cc64aebf
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < bb76c6c274683c8570ad788f79d4b875bde0e458bb76c6c274683c8570ad788f79d4b875bde0e458
linuxlinux_kernel< 4.19.3184.19.318
linuxlinux_kernel>= 0 < 5.10.223-15.10.223-1
linuxlinux_kernel>= 0 < 6.1.98-16.1.98-1
linuxlinux_kernel>= 0 < 6.9.9-16.9.9-1
linuxlinux_kernel>= 0 < 6.9.9-16.9.9-1
linuxlinux_kernel>= 0 < 5.4.0-195.2155.4.0-195.215
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-48.486.8.0-48.48
linuxlinux_kernel>= 0 < 4.4.0-261.2954.4.0-261.295
linuxlinux_kernel>= 0 < 4.15.0-231.2434.15.0-231.243
linuxlinux_kernel>= 4.20 < 5.4.2805.4.280
linuxlinux_kernel>= 5.11 < 5.15.1635.15.163
linuxlinux_kernel>= 5.16 < 6.1.986.1.98
linuxlinux_kernel>= 5.5 < 5.10.2225.10.222

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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