CVE - CVE-2024-42104

CVE-ID
CVE-2024-42104	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/07c176e7acc5579c133bb923ab21316d192d0a95 URL:https://git.kernel.org/stable/c/07c176e7acc5579c133bb923ab21316d192d0a95 MISC:https://git.kernel.org/stable/c/1b7d549ed2c1fa202c751b69423a0d3a6bd5a180 URL:https://git.kernel.org/stable/c/1b7d549ed2c1fa202c751b69423a0d3a6bd5a180 MISC:https://git.kernel.org/stable/c/265fff1a01cdc083aeaf0d934c929db5cc64aebf URL:https://git.kernel.org/stable/c/265fff1a01cdc083aeaf0d934c929db5cc64aebf MISC:https://git.kernel.org/stable/c/2f2fa9cf7c3537958a82fbe8c8595a5eb0861ad7 URL:https://git.kernel.org/stable/c/2f2fa9cf7c3537958a82fbe8c8595a5eb0861ad7 MISC:https://git.kernel.org/stable/c/3ab40870edb883b9633dc5cd55f5a2a11afa618d URL:https://git.kernel.org/stable/c/3ab40870edb883b9633dc5cd55f5a2a11afa618d MISC:https://git.kernel.org/stable/c/b11e8fb93ea5eefb2e4e719497ea177a58ff6131 URL:https://git.kernel.org/stable/c/b11e8fb93ea5eefb2e4e719497ea177a58ff6131 MISC:https://git.kernel.org/stable/c/bb76c6c274683c8570ad788f79d4b875bde0e458 URL:https://git.kernel.org/stable/c/bb76c6c274683c8570ad788f79d4b875bde0e458 MISC:https://git.kernel.org/stable/c/c33c2b0d92aa1c2262d999b2598ad6fbd53bd479 URL:https://git.kernel.org/stable/c/c33c2b0d92aa1c2262d999b2598ad6fbd53bd479
Assigning CNA
kernel.org
Date Record Created
20240729	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240729)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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