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CVE-2024-50202

nilfs2: propagate directory read errors from nilfs_find_entry() PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: nilfs2: propagate directory read errors from nilfs_find_entry() Syzbot reported that a task hang occurs in vcs_open() during a fuzzing test for nilfs2. The root cause of this problem is that in nilfs_find_entry(), which searches for directory entries, ignores errors when loading a directory page/folio via nilfs_get_folio() fails. If the filesystem images is corrupted, and the i_size of the directory inode is large, and the directory page/folio is successfully read but fails the sanity check, for example when it is zero-filled, nilfs_check_folio() may continue to spit out error messages in bursts. Fix this issue by propagating the error to the callers when loading a page/folio fails in nilfs_find_entry(). The current interface of nilfs_find_entry() and its callers is outdated and cannot propagate error codes such as -EIO and -ENOMEM returned via nilfs_find_entry(), so fix it together.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 2ba466d74ed74f073257f86e61519cb8f8f46184 before bb857ae1efd3138c653239ed1e7aef14e1242c81; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before b4b3dc9e7e604be98a222e9f941f5e93798ca475; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before c1d0476885d708a932980b0f28cd90d9bd71db39; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before edf8146057264191d5bfe5b91773f13d936dadd3; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 270a6f9df35fa2aea01ec23770dc9b3fc9a12989; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 9698088ac7704e260f492d9c254e29ed7dd8729a; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before efa810b15a25531cbc2f527330947b9fe16916e7; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 08cfa12adf888db98879dbd735bc741360a34168
Linux / Linuxaffected 2.6.30; unaffected 0 before 2.6.30; unaffected 4.19.323 through 4.19.*; unaffected 5.4.285 through 5.4.*; unaffected 5.10.228 through 5.10.*; unaffected 5.15.169 through 5.15.*; unaffected 6.1.114 through 6.1.*; unaffected 6.6.58 through 6.6.*; unaffected 6.11.5 through 6.11.*; unaffected 6.12 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

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No references supplied.

CVE

No English description supplied.