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CVE-2024-26981

nilfs2: fix OOB in nilfs_set_de_type PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix OOB in nilfs_set_de_type The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is defined as "S_IFMT >> S_SHIFT", but the nilfs_set_de_type() function, which uses this array, specifies the index to read from the array in the same way as "(mode & S_IFMT) >> S_SHIFT". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t mode = inode->i_mode; de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob } However, when the index is determined this way, an out-of-bounds (OOB) error occurs by referring to an index that is 1 larger than the array size when the condition "mode & S_IFMT == S_IFMT" is satisfied. Therefore, a patch to resize the nilfs_type_by_mode array should be applied to prevent OOB errors.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 054f29e9ca05be3906544c5f2a2c7321c30a4243; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 90f43980ea6be4ad903e389be9a27a2a0018f1c8; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before bdbe483da21f852c93b22557b146bc4d989260f0; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 897ac5306bbeb83e90c437326f7044c79a17c611; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 2382eae66b196c31893984a538908c3eb7506ff9; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before 90823f8d9ecca3d5fa6b102c8e464c62f416975f; affected 2ba466d74ed74f073257f86e61519cb8f8f46184 before c4a7dc9523b59b3e73fd522c73e95e072f876b16
Linux / Linuxaffected 2.6.30; unaffected 0 before 2.6.30; unaffected 4.19.313 through 4.19.*; unaffected 5.4.275 through 5.4.*; unaffected 5.10.216 through 5.10.*; unaffected 5.15.157 through 5.15.*; unaffected 6.1.88 through 6.1.*; unaffected 6.6.29 through 6.6.*; unaffected 6.8.8 through 6.8.*; unaffected 6.9 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

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CVE

No English description supplied.