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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-42104 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/07c176e7acc5579c133bb923ab21316d192d0a95 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/1b7d549ed2c1fa202c751b69423a0d3a6bd5a180 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/265fff1a01cdc083aeaf0d934c929db5cc64aebf CVE, kernel.org Patch 
https://git.kernel.org/stable/c/2f2fa9cf7c3537958a82fbe8c8595a5eb0861ad7 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/3ab40870edb883b9633dc5cd55f5a2a11afa618d CVE, kernel.org Patch 
https://git.kernel.org/stable/c/b11e8fb93ea5eefb2e4e719497ea177a58ff6131 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/bb76c6c274683c8570ad788f79d4b875bde0e458 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/c33c2b0d92aa1c2262d999b2598ad6fbd53bd479 CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-42104
NVD Published Date:
07/30/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org